1.Identification
1.1 GHS Product identifier
| Product name | Chloromethane |
|---|
1.2 Other means of identification
| Product number | - |
|---|---|
| Other names | Methane, chloro- |
1.3 Recommended use of the chemical and restrictions on use
| Identified uses | For industry use only. Volatile organic compounds |
|---|---|
| Uses advised against | no data available |
1.4 Supplier's details
1.5 Emergency phone number
| Emergency phone number | - |
|---|---|
| Service hours | Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours). |
2.Hazard identification
2.1 Classification of the substance or mixture
Gases under pressure: Compressed gas
Flammable gases, Category 1
Carcinogenicity, Category 2
Specific target organ toxicity – repeated exposure, Category 2
2.2 GHS label elements, including precautionary statements
| Pictogram(s) |    |
|---|---|
| Signal word | Danger |
| Hazard statement(s) | H220 Extremely flammable gas H351 Suspected of causing cancer |
| Precautionary statement(s) | |
| Prevention | P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P280 Wear protective gloves/protective clothing/eye protection/face protection. P260 Do not breathe dust/fume/gas/mist/vapours/spray. |
| Response | P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely. P381 In case of leakage, eliminate all ignition sources. P308+P313 IF exposed or concerned: Get medical advice/ attention. P314 Get medical advice/attention if you feel unwell. |
| Storage | P410+P403 Protect from sunlight. Store in a well-ventilated place. P403 Store in a well-ventilated place. P405 Store locked up. |
| Disposal | P501 Dispose of contents/container to ... |
2.3 Other hazards which do not result in classification
none
3.Composition/information on ingredients
3.1 Substances
| Chemical name | Common names and synonyms | CAS number | EC number | Concentration |
|---|---|---|---|---|
| Chloromethane | Chloromethane | 74-87-3 | none | 100% |
4.First-aid measures
4.1 Description of necessary first-aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
In case of skin contact
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
4.2 Most important symptoms/effects, acute and delayed
Inhalation causes nausea, vomiting, weakness, headache, emotional disturbances; high concentrations cause mental confusion, eye disturbances, muscular tremors, cyanosis, convulsions. Contact of liquid with skin may cause frostbite. (USCG, 1999)
4.3 Indication of immediate medical attention and special treatment needed, if necessary
Flush eyes with water, and hospitalize. Treat with oxygen against shock, and, if indicated administer stimulants. Treat burns of skin in the usual way.
5.Fire-fighting measures
5.1 Extinguishing media
Suitable extinguishing media
Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
5.2 Specific hazards arising from the chemical
Special Hazards of Combustion Products: Toxic and irritating gases are generated in fires. Behavior in Fire: Containers may explode (USCG, 1999)
5.3 Special protective actions for fire-fighters
Wear self-contained breathing apparatus for firefighting if necessary.
6.Accidental release measures
6.1 Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.
6.2 Environmental precautions
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. NEVER direct water jet on liquid.
6.3 Methods and materials for containment and cleaning up
ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Beware of vapors accumulating to form explosive concentrations. Vapors can accumulate in low areas; Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains; Methods and materials for containment and cleaning up: Clean up promptly by sweeping or vacuum.
7.Handling and storage
7.1 Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Fireproof. Ventilation along the floor.Keep container tightly closed in a dry and well-ventilated place. Contents under pressure. Moisture sensitive. Storage class (TRGS 510): Gases
8.Exposure controls/personal protection
8.1 Control parameters
Occupational Exposure limit values
NIOSH considers methyl chloride to be a potential occupational carcinogen.
NIOSH usually recommends that occupational exposures to carcinogens be limited to the lowest feasible concentration.
Biological limit values
no data available
8.2 Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.
8.3 Individual protection measures, such as personal protective equipment (PPE)
Eye/face protection
Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Respiratory protection
Wear dust mask when handling large quantities.
Thermal hazards
no data available
9.Physical and chemical properties
| Physical state | colourless gas |
|---|---|
| Colour | Colorless compressed gas or liquid |
| Odour | Faint sweet ethereal odor |
| Melting point/ freezing point | -91°C(lit.) |
| Boiling point or initial boiling point and boiling range | ?24.2°C(lit.) |
| Flammability | Flammable GasHighly flammable. Heating will cause rise in pressure with risk of bursting. |
| Lower and upper explosion limit / flammability limit | Lower flammable limit: 8.1% by volume; Upper flammable limit: 17.4% by volume |
| Flash point | 24°C(lit.) |
| Auto-ignition temperature | 631.67°C |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | 0.00027 Pa.s at 20°C (liquid, 0.5 MPa) |
| Solubility | Slightly soluble |
| Partition coefficient n-octanol/water (log value) | log Kow = 0.91 |
| Vapour pressure | 760 mm Hg at --11.67°C ; 3672 mm Hg at 20°C |
| Density and/or relative density | 0.915g/mLat 25°C(lit.) |
| Relative vapour density | 1.74 (vs air) |
| Particle characteristics | no data available |
10.Stability and reactivity
10.1 Reactivity
no data available
10.2 Chemical stability
Chemical stability: Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
Flammable gas. Very dangerous fire hazard when exposed to heat, flame or powerful oxidizers. ... May ignite on contact with aluminum chloride or powdered aluminum.The gas is heavier than air and may travel along the ground; distant ignition possible. The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. See Notes.METHYL CHLORIDE can react vigorously with oxidizing agents. May react explosively with sodium, potassium, sodium-potassium alloy, magnesium, zinc. Reacts with aluminum powder in the presence of catalytic amounts of aluminum chloride to form pyrophoric trimethylaluminum. When heated to decomposition, it emits highly toxic fumes of chlorine [Bretherick, 5th ed., 1995, p. 176].
10.4 Conditions to avoid
no data available
10.5 Incompatible materials
Incompatible materials: Strong oxidizing agents, Iron
10.6 Hazardous decomposition products
... In contact with moisture undergoes slow decomposition to hydrochloric acid and methanol.
11.Toxicological information
Acute toxicity
- Oral: LD50 Rat oral 1800 mg/kg
- Inhalation: LC50 Mouse inhalation 6300 mg/cu m/7 hr
- Dermal: no data available
Skin corrosion/irritation
no data available
Serious eye damage/irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
The Human Health Assessment Group in EPA's Office of Health and Environmental Assessment has evaluated methyl chloride for carcinogenicity. According to their analysis, the weight-of-evidence for methyl chloride is group C, which is based on limited evidence in animals. No data are available for humans. As a group C chemical, methyl chloride is considered possibly carcinogenic to humans.
Reproductive toxicity
No studies were located concerning developmental or reproductive effects of methyl chloride in humans. Several inhalation studies have demonstrated that methyl chloride causes reproductive effects in animals, with effects such as testicular lesions, disrupted spermatogenesis, and decreased sperm production in male rats. Delayed fetal development was noted in rats exposed to the same concentration of methyl chloride that resulted in maternal toxicity.
STOT-single exposure
no data available
STOT-repeated exposure
no data available
Aspiration hazard
no data available
12.Ecological information
12.1 Toxicity
- Toxicity to fish: LC50; Species: Lepomis macrochirus (/Bluegill)/; Conditions: static bioassay in fresh water at 23°C, mild aeration applied after 24 hr; Concentration: 550 ppm for 96 hr
- Toxicity to daphnia and other aquatic invertebrates: no data available
- Toxicity to algae: no data available
- Toxicity to microorganisms: no data available
12.2 Persistence and degradability
AEROBIC: Methyl chloride, present at 3.79-19.2 mg/L, reached 1% of its theoretical BOD in 4 weeks using an activated sludge inoculum concentration of 1 drop/L in the Japanese MITI test(1). Using OECD Guideline 301D (Ready Biodegradability: Closed Bottle Test) with an activated sludge inoculum, methyl chloride (at 3 mg/L) reached 77% degradation after 28 days of incubation(2). Direct measurements of methyl chloride degradation in coastal seawater from Nova Scotia indicated that loss of methyl chloride was due to microbial activity(3). Strains of bacteria isolated from terrestrial, freshwater, estuarine and marine environments have been shown to be capable of biodegrading methyl chloride(2,4). Methyl chloride was biodegraded in a soil microcosm(5).
12.3 Bioaccumulative potential
An estimated BCF of 3 was calculated for methyl chloride in fish(SRC), using a log Kow of 0.91(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).
12.4 Mobility in soil
Using a structure estimation method based on molecular connectivity indices(1), the Koc for methyl chloride can be estimated to be 13(SRC). According to a classification scheme(2), this estimated Koc value suggests that methyl chloride is expected to have very high mobility in soil.
12.5 Other adverse effects
no data available
13.Disposal considerations
13.1 Disposal methods
Product
The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.
Contaminated packaging
Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.
14.Transport information
14.1 UN Number
| ADR/RID: UN1063 | IMDG: UN1063 | IATA: UN1063 |
14.2 UN Proper Shipping Name
| ADR/RID: METHYL CHLORIDE (REFRIGERANT GAS R 40) |
| IMDG: METHYL CHLORIDE (REFRIGERANT GAS R 40) |
| IATA: METHYL CHLORIDE (REFRIGERANT GAS R 40) |
14.3 Transport hazard class(es)
| ADR/RID: 3 | IMDG: 3 | IATA: 3 |
14.4 Packing group, if applicable
| ADR/RID: II | IMDG: II | IATA: II |
14.5 Environmental hazards
| ADR/RID: no | IMDG: no | IATA: no |
14.6 Special precautions for user
no data available
14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
no data available
15.Regulatory information
15.1 Safety, health and environmental regulations specific for the product in question
| Chemical name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| Chloromethane | Chloromethane | 74-87-3 | none |
| European Inventory of Existing Commercial Chemical Substances (EINECS) | Listed. | ||
| EC Inventory | Listed. | ||
| United States Toxic Substances Control Act (TSCA) Inventory | Listed. | ||
| China Catalog of Hazardous chemicals 2015 | Listed. | ||
| New Zealand Inventory of Chemicals (NZIoC) | Listed. | ||
| Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Listed. | ||
| Vietnam National Chemical Inventory | Listed. | ||
| Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Listed. | ||
16.Other information
Information on revision
| Creation Date | Aug 12, 2017 |
|---|---|
| Revision Date | Aug 12, 2017 |
Abbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
- IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
- HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
- IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
- eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
- CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
- ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
- ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
- Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
- ECHA - European Chemicals Agency, website: https://echa.europa.eu/