METHYL CHLOROFORMATE
METHYL
CHLOROFORMATE
CASRN: 79-22-1
http://toxnet.nlm.nih.gov/cgi-bin/sis/search/r?./temp/~AAAmVa4XQ:@DOCNO+@term+1116
Human Health Effects:
Human Toxicity Excerpts:
... HIGHLY CORROSIVE AND IRRITANT TO SKIN AND
EYES ... .
... IT IS HIGHLY IRRITANT AND CORROSIVE BY
INGESTION, INHALATION, OR EYE ... CONTACT. CONCN OF 10 PPM (5.28 MG/CU M) HAVE
CAUSED LACRIMATION AND A CONCN OF 190 PPM (1 MG/L) HAS BEEN LETHAL IN 10 MIN.
HUMANS EXPOSED TO METHYL CHLOROFORMATE HAVE
EXPERIENCED RESPIRATORY TRACT AND EYE IRRITATION, EVEN PERSISTING AFTER
CESSATION OF EXPOSURE. SKIN SENSITIZATION MAY OCCUR, ALTHOUGH EMPLOYEES IN
CHEMICAL MANUFACTURING PLANT SHOWED NO HEALTH EFFECTS NOR POSITIVE LAB FINDINGS
FROM BLOOD AND LIVER FUNCTION TESTS.
A CHEM PRODUCTION WORKER WAS EXPOSED TO METHYL
CHLOROFORMATE, 2-3 INHALATIONS. BRIEF INITIAL IRRITATION, BUT MASSIVE SYMPTOMS
OCCURRED AFTER 36 HR: HEAVY COUGH, DYSPNEA & LIGHT LIP CYANOSIS. IMPROVEMENT
AND RELAPSES OCCURRED DURING NEXT 9 DAYS, WITH EVENTUAL FULL RECOVERY.
COMPARATIVELY, IRRITANT POTENCY MAY BE ABOUT
FIVE TIMES THAT OF CHLORINE AND ONE-HALF THAT OF PHOSGENE.
Human Toxicity Values:
... A CONCN OF 190 PPM (1 MG/L) HAS BEEN
LETHAL IN 10 MIN.
Skin, Eye and Respiratory Irritations:
VAPORS STRONGLY IRRITATING TO EYES.
... HIGHLY CORROSIVE AND IRRITANT TO SKIN ...
.
Probable Routes of Human Exposure:
Exposure to methyl chloroformate will be
primarily occupational via inhalation and possibly dermal contact. (SRC)
NIOSH (NOES Survey 1981-1983) has
statistically estimated that 3,949 workers are potentially exposed to methyl
chloroformate in the USA(1).
Animal Toxicity Studies:
Non-Human Toxicity Excerpts:
METHYL CHLOROFORMATE CAUSED DAMAGE TO GUINEA
PIG SKIN. /FROM TABLE/
METHYL CHLOROFORMATE CAUSED INFLAMMATION,
SUPPURATION, & POISONING WHEN INTRODUCED INTO CONJUNCTIVAL SAC OF ANIMALS.
CHRONIC INHALATION TESTS SHOWED THE HIGHEST INEFFECTIVE CONCN ARE 0.185 MG/CU M
FOR MICE & 0.197 MG/CU M FOR RATS.
Non-Human Toxicity Values:
LD50 Rat oral <0.05 g/kg
Environmental Fate/Exposure Summary:
Methyl chloroformate may be released to the
environment as a result of its manufacture and use as an intermediate in organic
synthesis and in the preparation of insecticides. If methyl chloroformate is
released to soil, it should rapidly hydrolyze if the soil is moist, based upon
the relatively rapid hydrolysis observed in aqueous solution. Since it rapidly
hydrolyzes biodegradation, adsorption, and volatilization from moist soil are
not expected to be significant processes, although no data specifically
regarding the fate of methyl chloroformate in soil were located. Based upon a
measured vapor pressure of 108.5 mm Hg at 25 deg C, volatilization from dry
near-surface soil or other surfaces may be significant processes. If released to
water, it will be expected to hydrolyze relatively rapidly with a calculated
half-life of 34.8 min at 19.6 deg C. Since it rapidly hydrolyzes,
bioconcentration, volatilization, biodegradation, and adsorption to sediment and
suspended solids are not expected to be significant processes. If released to
the atmosphere, it will be expected to exist almost entirely in the vapor phase
based upon a measured vapor pressure of 108.5 mm Hg at 25 deg C. It will be
susceptible to photooxidation via vapor phase reaction with photochemically
produced hydroxyl radicals. An atmospheric half-life of 74 days at an
atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm has been
calculated for this process based upon an estimated rate constant. Exposure to
methyl chloroformate will be primarily occupational via inhalation and possibly
dermal contact. (SRC)
Probable Routes of Human Exposure:
Exposure to methyl chloroformate will be
primarily occupational via inhalation and possibly dermal contact. (SRC)
NIOSH (NOES Survey 1981-1983) has
statistically estimated that 3,949 workers are potentially exposed to methyl
chloroformate in the USA(1).
Artificial Pollution Sources:
Methyl chloroformate may be released to the
environment as a result of its manufacture and use as an intermediate in organic
synthesis and in the preparation of insecticides(1). It also has been used as a
military poison gas in World War I(2).
Environmental Fate:
TERRESTRIAL FATE: If methyl chloroformate is
released to soil, it should rapidly hydrolyze if the soil is moist, based upon
the relatively rapid hydrolysis observed in aqueous solution(1,SRC). Since it
rapidly hydrolyzes, biodegradation, adsorption, and volatilization from moist
soil are not expected to be significant processes, although no data specifically
regarding the fate of methyl chloroformate in soil were located(SRC). Based upon
a measured vapor pressure of 108.5 mm Hg at 25 deg C(2), volatilization from dry
near-surface soil or other surfaces may be a significant process(SRC).
AQUATIC FATE: If methyl chloroformate is
released to water, it will be expected to hydrolyze relatively rapidly with a
calculated half-life of 34.8 min at 19.6 deg C(1,SRC). Since it relatively
rapidly hydrolyzes, bioconcentration, volatilization, biodegradation, and
adsorption to sediment and suspended solids are not expected to be significant
processes(SRC).
ATMOSPHERIC FATE: If methyl chloroformate is
released to the atmosphere, it will be expected to exist almost entirely in the
vapor phase(1) based upon a measured vapor pressure of 108.5 mm Hg at 25 deg
C(2). It will be susceptible to photooxidation via vapor phase reaction with
photochemically produced hydroxyl radicals. An atmospheric half-life of 74 days
at an atmospheric concentration of 5X10+5 hydroxyl radicals per cu cm has been
calculated for this process based upon an estimated rate constant(3,SRC).
Environmental Biodegradation:
No data were located concerning the
biodegradation of methyl chloroformate either in natural systems or in
laboratory studies(SRC). Since methyl chloroformate hydrolyzes with a calculated
half-life of 34.8 min at 19.6 deg C(1,SRC), biodegradation probably will not be
a significant process in the environment(SRC).
Environmental Abiotic Degradation:
The measured overall rate constant for
hydrolysis of methyl chloroformate in aqueous solution at 19.6 deg C is 3.3X10-4
sec-1(1) which corresponds to a half-life of about 35 min(1). The hydrolysis may
be acid or base catalyzed, however, suggesting that the rate of hydrolysis may
be faster in acidic or basic solutions(3). The rate constant for the vapor phase
reaction of methyl chloroformate with photochemically produced hydroxyl radicals
has been estimated to be 0.22X10-12 cu cm/molecule-sec at 25 deg C which
corresponds to an atmospheric half-life of 74 days at an atmospheric
concentration of 5X10+5 hydroxyl radicals per cu cm (2,SRC).
Environmental Bioconcentration:
Since methyl chloroformate hydrolyzes in water
relatively rapidly(1), bioconcentration in aquatic organisms is not expected to
be a significant process(SRC).
Soil Adsorption/Mobility:
Since methyl chloroformate rapidly hydrolyzes
in water(1) and presumably in moist soil(SRC), adsorption to soil is not
expected to be a significant process(SRC).
Volatilization from Water/Soil:
Since methyl chloroformate hydrolyzes in water
relatively rapidly(1), it is not possible to estimate the half-life for
volatilization from aqueous media(SRC). Based upon a measured vapor pressure of
108.5 mm Hg at 25 deg C(2), volatilization of methyl chloroformate from surfaces
and near-surface dry soil may be significant processes(SRC). In a comparison of
relative volatility from wet and dry soil, the evaporation rate of methyl
chloroformate was estimated to be approx 3.5 times slower than that of carbon
disulfide(3). Since carbon disulfide is known to evaporate quickly from soil,
evaporation of methyl chloroformate from soil may be a significant process(SRC).
The low-boiling chloroformic esters are highly volatile(4); therefore,
evaporation from dry surfaces will occur(SRC).
Environmental Standards & Regulations:
CERCLA Reportable Quantities:
Persons in charge of vessels or facilities are
required to notify the National Response Center (NRC) immediately, when there is
a release of this designated hazardous substance, in an amount equal to or
greater than its reportable quantity of 1000 lb or 454 kg. The toll free number
of the NRC is (800) 424-8802; In the Washington D.C. metropolitan area (202)
426-2675. The rule for determining when notification is required is stated in 40
CFR 302.4 (section IV. D.3.b).
Releases of CERCLA hazardous substances are
subject to the release reporting requirement of CERCLA section 103, codified at
40 CFR part 302, in addition to the requirements of 40 CFR part 355. Methyl
Chloroformate is an extremely hazardous substance (EHS) subject to reporting
requirements when stored in amounts in excess of its threshold planning quantity
(TPQ) of 500 lbs.
RCRA Requirements:
U156; As stipulated in 40 CFR 261.33, when
methyl chlorocarbonate, as a commercial chemical product or manufacturing
chemical intermediate or an off-specification commercial chemical product or a
manufacturing chemical intermediate, becomes a waste, it must be managed
according to Federal and/or State hazardous waste regulations. Also defined as a
hazardous waste is any residue, contaminated soil, water, or other debris
resulting from the cleanup of a spill, into water or on dry land, of this waste.
Generators of small quantities of this waste may qualify for partial exclusion
from hazardous waste regulations (40 CFR 261.5).
Chemical/Physical Properties:
Molecular Formula:
C2-H3-Cl-O2
Molecular Weight:
94.50
Color/Form:
CLEAR LIQUID
Odor:
Unpleasant, acrid
Boiling Point:
71.0 DEG C
Melting Point:
Less than -114 deg F= less than -81 deg C=
less than 192 deg K
Corrosivity:
Corrodes rubber
Critical Temperature & Pressure:
Critical temp = 525 deg K; Critical pressure =
5.36X10+6 Pa
Density/Specific Gravity:
1.223 @ 20 DEG C/4 DEG C
Heat of Combustion:
-6.89X10+8 J/kmol
Heat of Vaporization:
4.2599X10+7 J/kmol @ 192 deg K
Solubilities:
SOL IN CHLOROFORM, BENZENE, IN ALL PROPORTIONS
IN ALCOHOL, ETHER
Spectral Properties:
INDEX OF REFRACTION: 1.3868 @ 20 DEG C/D
IR: 13474 (Sadtler Research Laboratories Prism
Collection)
NMR: 4463 (Sadtler Research Laboratories
Spectral Collection)
MASS: 196 (Atlas of Mass Spectral Data, John
Wiley & Sons, New York)
Surface Tension:
0.044116 newtons/meter @ 192 deg K
Vapor Density:
3.26 (AIR= 1)
Vapor Pressure:
108.5 mm Hg @ 25 deg C
Other Chemical/Physical Properties:
Ratio of Specific Heats of Vapor (Gas): 1.1544
... DECOMPOSED BY WATER
Liquid molar volume = 0.077878 cu m/kmol; Heat
of formation = -4.24X10+8 J/kmol; Autoignition temp = 777.15 deg K; Flammability
limits = 6.7 to 15.6 vol %
Aqueous hydrolysis rate constant in distilled
water is 0.000564/sec at 25 deg C which corresponds to a hydrolysis half-life of
about 20.5 min
Chloroformates are reactive intermediates that
combine acid chloride, and ester functions. They undergo many reactions of acid
chlorides, however, the rates are usually slower. Reactions of chloroformates,
like other acid chlorides, proceed faster with better yields when alkali
hydroxides or tertiary amines are present to react with the HCl as it forms. /Chloroformates/
Chemical Safety & Handling:
DOT Emergency Guidelines:
Fire or explosion: HIGHLY FLAMMABLE: Will be
easily ignited by heat, sparks or flames. Vapors form explosive mixtures with
air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier
than air. They will spread along ground and collect in low or confined areas
(sewers, basements, tanks). Vapors may travel to source of ignition and flash
back. Substance will react with water (some violently) releasing flammable,
toxic or corrosive gases and runoff. Contact with metals may evolve flammable
hydrogen gas. Containers may explode when heated or if contaminated with water.
Health: TOXIC; inhalation, ingestion or
contact (skin, eyes) with vapors, dusts or substance may cause severe injury,
burns, or death. Bromoacetates and chloroacetates are extremely
irritating/lachrymators. Reaction with water or moist air will release toxic,
corrosive or flammable gases. Reaction with water may generate much heat which
will increase the concentration of fumes in the air. Fire will produce
irritating, corrosive and/or toxic gases. Runoff from fire control or dilution
water may be corrosive and/or toxic and cause pollution.
Public safety: CALL Emergency Response
Telephone Number on Shipping Paper first. If Shipping Paper not available or no
answer, refer to appropriate telephone number listed on the inside back cover.
Isolate spill or leak area immediately for at least 50 to lOO meters (160 to 330
feet) in all directions. Keep unauthorized personnel away. Stay upwind. Keep out
of low areas. Ventilate enclosed areas.
Protective clothing: Wear positive pressure
self-contained breathing apparatus (SCBA). Wear chemical protective clothing
which is specifically recommended by the manufacturer. Structural firefighters'
protective clothing is recommended for fire situations ONLY; it is not effective
in spill situations.
Evacuation: Spill: See the Table of Initial
Isolation and Protective Action Distances for highlighted substances. For
non-highlighted substances, increase, in the downwind direction, as necessary,
the isolation distance shown under "PUBLIC SAFETY". Fire: If tank,
rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile)
in all directions; also, consider initial evacuation for 800 meters (1/2 mile)
in all directions.
Fire: Note: Most foams will react with the
material and release corrosive/toxic gases. Small fires: CO2, dry chemical, dry
sand, alcohol-resistant foam. Large fires: Water spray, fog or alcohol-resistant
foam. FOR CHLOROSILANES, DO NOT USE WATER; use AFFF alcohol-resistant medium
expansion foam. Move containers from fire area if you can do it without risk. Do
not use straight streams. Fire involving tanks or car/trailer loads: Fight fire
from maximum distance or use unmanned hose holders or monitor nozzles. Do not
get water inside containers. Cool containers with flooding quantities of water
until well after fire is out. Withdraw immediately in case of rising sound from
venting safety devices or discoloration of tank. ALWAYS stay away from the ends
of tanks.
Spill or leak: Eliminate all ignition sources
(no smoking, flares, sparks or flames in immediate area). All equipment used
when handling the product must be grounded. Do not touch damaged containers or
spilled material unless wearing appropriate protective clothing. Stop leak if
you can do it without risk. A vapor suppressing foam may be used to reduce
vapors. FOR CHLOROSILANES, use AFFF alcohol-resistant medium expansion foam to
reduce vapors. DO NOT GET WATER on spilled substance or inside containers. Use
water spray to reduce vapors or divert vapor cloud drift. Prevent entry into
waterways, sewers, basements or confined areas. Small spills: Cover with DRY
earth, DRY sand, or other non-combustible material followed with plastic sheet
to minimize spreading or contact with rain. Use clean non-sparking tools to
collect material and place it into loosely covered plastic containers for later
disposal.
First aid: Move victim to fresh air. Call
emergency medical care. Apply artificial respiration if victim is not breathing.
Do not use mouth-to-mouth method if victim ingested or inhaled the substance;
induce artificial respiration with the aid of a pocket mask equipped with a
one-way valve or other proper respiratory medical device. Administer oxygen if
breathing is difficult. Remove and isolate contaminated clothing and shoes. In
case of contact with substance, immediately flush skin or eyes with running
water for at least 20 minutes. For minor skin contact, avoid spreading material
on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation,
ingestion or skin contact) to substance may be delayed. Ensure that medical
personnel are aware of the material(s) involved, and take precautions to protect
themselves.
Initial Isolation and Protective Action
Distances: Small Spills (from a small package or small leak from a large
package): First, ISOLATE in all Directions 95 meters (300 feet); then, PROTECT
persons Downwind during DAY 0.3 kilometers (0.2 miles) and NIGHT 1.3 kilometers
(0.8 miles). LARGE SPILLS (from a large package or from many small packages):
First, ISOLATE in all Directions 245 meters (800 feet); then, PROTECT persons
Downwind during DAY 1.1 kilometers (0.7 miles) and NIGHT 4.5 kilometers (2.8
miles).
Skin, Eye and Respiratory Irritations:
VAPORS STRONGLY IRRITATING TO EYES.
... HIGHLY CORROSIVE AND IRRITANT TO SKIN ...
.
Fire Potential:
VERY DANGEROUS WHEN EXPOSED TO HEAT SOURCES,
SPARKS, FLAME, OR OXIDIZERS.
Flammable Limits:
Lower: 6.7%
Flash Point:
24.4 deg C (Tag open cup), 17.8 deg C (Tag
closed cup)
76 deg F (open cup); 73 deg F (closed cup)
Autoignition Temperature:
940 DEG F
Fire Fighting Procedures:
Water, dry chem, foam, carbon dioxide. Cool
exposed containers with water.
If material on fire or involved in fire: Do
not extinguish fire unless flow can be stopped. Use "alcohol" foam,
dry chemical or carbon dioxide. Cool all affected containers with flooding
quantities of water. Apply water from as far a distance as possible. Do not use
water on material itself. If large quantities of combustibles are involved, use
water in flooding quantities as spray and fog. Use water spray to knock-down
vapors.
Toxic Combustion Products:
Irritating and toxic hydrogen chloride and
phosgene may be formed.
Firefighting Hazards:
Vapor is heavier than air and may travel a
considerable distance to a source of ignition and flash back.
Explosive Limits & Potential:
Containers may explode in fire. Vapor may
explode if ignited in an enclosed area.
Hazardous Reactivities & Incompatibilities:
Reacts slowly with water, evolving hydrogen
chloride ... . Reaction can be hazardous if water is hot.
Hazardous Decomposition:
WHEN HEATED TO DECOMPOSITION, EMITS HIGHLY
TOXIC FUMES OF METHYL CHLOROFORMATE AND PHOSGENE.
Protective Equipment & Clothing:
Acid- or organic-canister mask or
self-contained breathing apparatus; goggles or face shield; plastic gloves.
Preventive Measures:
If material not on fire and not involved in
fire: Keep sparks, flames, and other sources of ignition away. Keep material out
of water sources and sewers. Build dikes to contain flow as necessary. Attempt
to stop leak if without undue personnel hazard. Use water spray to knock-down
vapors. Do not use water on material itself. Neutralize spilled material with
crushed limestone, soda ash, or lime.
Personnel protection: Avoid breathing vapors.
Keep upwind. Wear positive pressure self-contained breathing apparatus. Avoid
bodily contact with the material. Wear appropriate chemical protective clothing.
Do not handle broken packages unless wearing appropriate personal protective
equipment. Wash away any material which may have contacted the body with copious
amounts of water or soap and water.
Evacuation: If fire becomes uncontrollable or
container is exposed to direct flame--consider evacuation of one-third (1/3)
mile radius. If material leaking (not on fire) consider evacuation from downwind
area based on amount of material spilled, location and weather conditions.
SRP: Local exhaust ventilation should be
applied wherever there is an incidence of point source emissions or dispersion
of regulated contaminants in the work area. Ventilation control of the
contaminant as close to its point of generation is both the most economical and
safest method to minimize personnel exposure to airborne contaminants.
WHEN HANDLING THESE MATERIALS, THERE SHOULD BE
... ADEQUATE VENTILATION, & PROVISION FOR FLUSHING EYES OR SKIN WITH WATER.
/ACID HALIDES/
SRP: The scientific literature for the use of
contact lenses in industry is conflicting. The benefit or detrimental effects of
wearing contact lenses depend not only upon the substance, but also on factors
including the form of the substance, characteristics and duration of the
exposure, the uses of other eye protection equipment, and the hygiene of the
lenses. However, there may be individual substances whose irritating or
corrosive properties are such that the wearing of contact lenses would be
harmful to the eye. In those specific cases, contact lenses should not be worn.
In any event, the usual eye protection equipment should be worn even when
contact lenses are in place.
Shipment Methods and Regulations:
No person may /transport,/ offer or accept a
hazardous material for transportation in commerce unless that person is
registered in conformance ... and the hazardous material is properly classed,
described, packaged, marked, labeled, and in condition for shipment as required
or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./
The International Air Transport Association (IATA)
Dangerous Goods Regulations are published by the IATA Dangerous Goods Board
pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry
carrier regulations to be followed by all IATA Member airlines when transporting
hazardous materials.
The International Maritime Dangerous Goods
Code lays down basic principles for transporting hazardous chemicals. Detailed
recommendations for individual substances and a number of recommendations for
good practice are included in the classes dealing with such substances. A
general index of technical names has also been compiled. This index should
always be consulted when attempting to locate the appropriate procedures to be
used when shipping any substance or article.
Storage Conditions:
OWING TO THE FACT THAT THESE CMPD DECOMPOSE
EASILY, STORAGE CONTAINERS SHOULD BE VENTED. /CHLOROFORMATES/
Disposal Methods:
Generators of waste (equal to or greater than
100 kg/mo) containing this contaminant, EPA hazardous waste number U156, must
conform with USEPA regulations in storage, transportation, treatment and
disposal of waste.
Methyl chloroformate is a waste chemical
stream constituent which may be subjected to ultimate disposal by controlled
incineration. Incineration, preferably after mixing with another combustible
fuel; care must be exercised to assure complete combustion to prevent the
formation of phosgene. An acid scrubber is necessary to remove the halo acids
produced.
A potential candidate for liquid injection
incineration at a temperature range of 650 to 1,600 deg C and a residence time
of 0.1 to 2 seconds. A potential candidate for rotary kiln incineration at a
temperature range of 820 to 1,600 deg C and residence times of seconds for
liquids and gases, and hours for solids. A potential candidate for fluidized bed
incineration at a temperature range of 450 to 980 deg C and residence times of
seconds for liquids and gases, and longer for solids.
Occupational Exposure Standards:
Manufacturing/Use Information:
Major Uses:
Organic synthesis, insecticides.
... AS A WARFARE AGENT DURING WORLD WAR I.
/FORMER USE/
Reactive intermediate to pesticides,
pharmaceuticals and other chemicals; pharmaceutical synthesis, agricultural
products (herbicides, insecticides)
Used as solvent in the photographic industry
... employed in the production of carbamates that are used to synthesize dyes,
drugs, veterinary medicines, herbicides, and insecticides ... . Used as starting
material for the synthesis of the preservative velcorin.
Manufacturers:
PPG Industries, Inc, Hq One PPG Place,
Pittsburgh, PA 15272, (412) 434-3131; Chemicals Group; Fine Chemicals;
Production site: La Porte, TX 77571
Methods of Manufacturing:
MADE FROM PHOSGENE AND METHYL ALCOHOL
General Manufacturing Information:
Most chloroformate production is used
captively and production figures are not available.
Formulations/Preparations:
GRADES OR PURITY: 97+%
Grade: Technical (95% minimum)
Typical specifications of commercial
chloroformates: purity, 98%; phosgene, <0.1%, iron, <10 ppm; acidity as
HCl, <0.1%; alcohol or phenol, <2% /Chloroformic esters/
Commercial products have concentrations of
97-99 wt% /Chloroformic esters/
Impurities:
Carbon dioxide, hydrogen chloride, phosgene,
and alkyl chlorides; main impurities are corresponding carbonates /Chloroformic
esters/
Laboratory Methods:
Analytic Laboratory Methods:
The quantitative analysis of chloroformic
esters can be carried out by titration, gas chromatography, high-performance
liquid chromatography (HPLC) /Chloroformic esters/
Special References:
Synonyms and Identifiers:
Synonyms:
CARBONOCHLORIDIC ACID, METHYL ESTER
**PEER REVIEWED**
CHLORAMEISENSAEURE METHYLESTER (GERMAN)
**PEER REVIEWED**
CHLOROCARBONATE DE METHYLE (FRENCH)
**PEER REVIEWED**
CHLOROCARBONIC ACID METHYL ESTER
**PEER REVIEWED**
CHLOROFORMIATE DE METHYLE (FRENCH)
**PEER REVIEWED**
CHLOROFORMIC ACID METHYL ESTER
**PEER REVIEWED**
FORMIC ACID, CHLORO-, METHYL ESTER
**PEER REVIEWED**
MCF
**PEER REVIEWED**
METHOXYCARBONYL CHLORIDE
**PEER REVIEWED**
METHYLCHLOORFORMIAAT (DUTCH)
**PEER REVIEWED**
METHYL CHLOROCARBONATE
**PEER REVIEWED**
METILCLOROFORMIATO (ITALIAN)
**PEER REVIEWED**
K-STOFF
**PEER REVIEWED**
TL 438
**PEER REVIEWED**
Formulations/Preparations:
GRADES OR PURITY: 97+%
Grade: Technical (95% minimum)
Typical specifications of commercial
chloroformates: purity, 98%; phosgene, <0.1%, iron, <10 ppm; acidity as
HCl, <0.1%; alcohol or phenol, <2% /Chloroformic esters/
Commercial products have concentrations of
97-99 wt% /Chloroformic esters/
Shipping Name/ Number DOT/UN/NA/IMO:
UN 1238; Methyl chlorocarbonate; Methyl
chloroformate
IMO 3.2; Methyl chloroformate; Methyl
chlorocarbonate
Standard Transportation Number:
49 210 06; Methyl chloroformate
EPA Hazardous Waste Number:
U156; A toxic waste when a discarded
commercial chemical product or manufacturing chemical intermediate or an
off-specification commercial chemical product or manufacturing chemical
intermediate.
RTECS Number:
NIOSH/FG3675000
Administrative Information:
Hazardous Substances Databank Number: 1116
Last Revision Date: 20020513
Last Review Date: Reviewed by SRP 11/1/1994