Dichlorofluoromethane Safety Data Sheets

Not classified.

If inhaled

Following skin contact

Following eye contact

Following ingestion

INHALATION: May cause giddiness, light-headedness, disorientation, nausea, vomiting, narcosis, cardiac dysrhythmias, hypotension, and death. SKIN: May cause frostbite or irritation. EYES: May cause irritation or cold injury. (USCG, 1999)

Special Hazards of Combustion Products: Toxic fumes of chlorine and fluorine may be produced in fire. (USCG, 1999)

In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water.

Personal protection: self-contained breathing apparatus. Do NOT let this chemical enter the environment. Ventilation. NEVER direct water jet on liquid.

Personal protection: self-contained breathing apparatus. Do NOT let this chemical enter the environment. Ventilation. NEVER direct water jet on liquid.

If Refrigerant 21 is spilled or leaked, the following steps should be taken: 1. Ventilate area of spill or leak. 2. If the gas is leaking, stop the flow. 3. If the liquid is spilled or leaked, allow to vaporize.

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Fireproof if in building.... MATERIALS MUST BE STORED IN PLACES THAT ARE COOL ... PROVIDE ADEQUATE VENTILATION ... FURTHER PRECAUTION IS TO LOCATE ... AREA ... AWAY FROM AREAS OF FIRE HAZARD .

Occupational Exposure limit values

Biological limit values

Eye/face protection

Skin protection

Respiratory protection

Thermal hazards

Decomposes on heating. This produces corrosive and highly toxic fumes (hydrogen chloride - see ICSC 0163, hydrogen fluoride - see ICSC 0283 and phosgene - see ICSC 0007). Reacts with powdered aluminium, zinc and magnesium. Reacts with acids and acid fumes. This produces highly toxic fumes of chlorides and fluorides. Attacks some forms of plastic, rubber and coatings.

Condition/ contributing to instability: heat.

WEAKLY FLAMMABLE.The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen.DICHLOROFLUOROMETHANE is incompatible with the following: Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc & magnesium; acid; acid fumes (NIOSH, 2016).

no data available

Incompatibilities: Reacts violently with chemically active metals: sodium, potassium, calcium, powdered aluminum, zinc, magnesium, alkali, alkaline earth. Reacts with acids or acid fumes producing highly toxic chlorine and fluorine fumes. Attacks some forms of plastics, rubber, and coatings.

When heated to decomposition it emits very toxic fumes of chloride and fluoride.

Acute toxicity

• Oral: no data available
• Inhalation: LC50 Rat inhalation 49,900 ppm 4 hr
• Dermal: no data available

Skin corrosion/irritation

Serious eye damage/irritation

Respiratory or skin sensitization

Germ cell mutagenicity

Carcinogenicity

Reproductive toxicity

STOT-single exposure

STOT-repeated exposure

Aspiration hazard

• Toxicity to fish: no data available
• Toxicity to daphnia and other aquatic invertebrates: no data available
• Toxicity to algae: no data available
• Toxicity to microorganisms: no data available

AEROBIC: Complete degradation of dichlorofluoromethane, initially present at approximately 95 ppm, by methanotrophic bacteria occurred within approximately 19 days in soil samples collected from an agricultural field(1) when methane was added to the soil(1). In soil samples collected from a forest, complete degradation of dichlorofluoromethane, initially present at approximately 26 ppm, by methanotrophic bacteria occurred within approximately 5 days when methane was added to the soil(1). In batch experiments using soil pre-exposed to landfill gas incubated with methane and air, dichlorofluoromethane degraded with an oxidation rate 0.509 ug/g soil-hour(2). Dichlorofluoromethane, present at 11.6 mg/L, reached 0% of its theoretical BOD in 4 weeks using an activated sludge inoculum at a reported concentration of sludge of 1 drop/L in the Japanese MITI test(3).[(1) Oremland RS et al; Appl Environ Microbiol 62: 1818-21 (1996) (2) Scheutz C et al; J Environ Qual 33: 61-71 (2004) (3) NITE; Chemical Risk Information Platform (CHRIP). Biodegradation and Bioconcentration. Tokyo, Japan: Natl Inst Tech Eval. Available from, as of Dec 10, 2014: http://www.safe.nite.go.jp/english/db.html] Full text: PMC167957

An estimated BCF of 5 was calculated for dichlorofluoromethane in fish(SRC), using a log Kow of 1.55(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. The BCF of dichlorofluoromethane is reported as low using carp (Cyprinus carpio) which were exposed over an 8-week period (actual BCF value not reported)(4).

Using a structure estimation method based on molecular connectivity indices(1), the Koc for dichlorofluoromethane can be estimated to be 32(SRC). According to a classification scheme(2), this estimated Koc value suggests that dichlorofluoromethane is expected to have very high mobility in soil.

no data available

Product

Contaminated packaging

no data available

no data available

Information on revision

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/

Other Information

High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.Check oxygen content before entering the area.There is no odour warning even when toxic concentrations are present.Do NOT use in the vicinity of a fire or a hot surface, or during welding.Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.