Dichlorodifluoromethane SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Dichlorodifluoromethane
- CAS： 75-71-8
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses： For R&D use only. Not for medicinal, household or other use.
- Uses advised against： none
Company Identification
- Company：Chemicalbook.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
Classification of the substance or mixture
Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 3
Hazardous to the ozone layer, Category 1
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H412 Harmful to aquatic life with long lasting effects
H420 Harms public health and the environment by destroying ozone in the upper atmosphere
P273 Avoid release to the environment.
none
none
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
P502 Refer to manufacturer or supplier for information on recovery or recycling
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Dichlorodifluoromethane
- Common names and synonyms: Dichlorodifluoromethane
- CAS number: 75-71-8
- EC number: 200-893-9
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control Center immediately.
Most important symptoms/effects, acute and delayed
INHALATION: some narcosis when 10% in air is breathed. (USCG, 1999)
Indication of immediate medical attention and special treatment needed, if necessary
Victims of Freon inhalation require management for hypoxic, CNS anesthetic, and cardiac symptoms. Patients must be removed from the exposure environment, and high-flow supplemental oxygen should be utilized. The respiratory system should be evaluated for injury, aspiration, or pulmonary edema and treated appropriately. CNS findings should be treated supportively. A calm environment with no physical exertion is imperative to avoid increasing endogenous adrenegic levels. Exogenous adrenergic drugs must not be used to avoid inducing sensitized myocardial dysrhythmias. Atropine is ineffective in treating bradyarrhythmias. For ventricular dysrhythmias, diphenylhydantoin and countershock may be effective. Cryogenic dermal injuries should be treated by water bath rewarming at 40 to 42 deg C until vasodilatory flush has returned. Elevation of the limb and standard frostbite management with late surgical debridement should be utilized. Ocular exposure requires irrigation and slit-lamp evaluation for injury. Freons
SECTION 5: Firefighting measures
Suitable extinguishing media
If material involved in fire: Extingiush fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty). Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Specific hazards arising from the chemical
Special Hazards of Combustion Products: Although nonflammable, dissociation products generated in a fire may be irritating or toxic. Behavior in Fire: Helps extinguish fire. (USCG, 1999)
Special protective actions for fire-fighters
In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep cylinder cool by spraying with water.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Ventilation.
Environmental precautions
Ventilation.
Methods and materials for containment and cleaning up
If dichlorodifluoromethane is leaked ... ventilate area of spill or leak to disperse gas. ... Stop flow of gas.
SECTION 7: Handling and storage
Precautions for safe handling
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.
Conditions for safe storage, including any incompatibilities
Separated from incompatible materials. See Chemical Dangers. Cool. Ventilation along the floor.Separated from incompatible materials. ... Cool. Ventilation along the floor.
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 1000 ppm as TWA; A4 (not classifiable as a human carcinogen).MAK: 5000 mg/m3, 1000 ppm; peak limitation category: II(2); pregnancy risk group: C
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear safety goggles.
Cold-insulating gloves.
Use ventilation, local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Dichlorodifluoromethane is a colorless gas having a faint ethereal odor. Shipped as a liquid confined under its own vapor pressure. Contact with the unconfined liquid can cause frostbite. Both components are noncombustible. Can asphyxiate by the displacement of air. Exposure of the closed container to prolonged heat or fire can cause it to rupture violently and rocket.
-
Colour：
Colorless gas ... [Note: Shipped as a liquified compressed gas]
-
Odour：
Practically odorless ... faint, ether-like odor in high concentration
-
Melting point/freezing point：
-158°C
-
Boiling point or initial boiling point and boiling range：
-29.79°C
-
Flammability：
Nonflammable Gas
-
Lower and upper explosion limit/flammability limit：
no data available
-
Flash point：
11°C
-
Auto-ignition temperature：
Not flammable (USCG, 1999)
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
0.262 centipoise at 70 deg F
-
Solubility：
Insoluble (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Kow = 2.16
-
Vapour pressure：
5 atm at 61° F (NTP, 1992)
-
Density and/or relative density：
1.329
-
Relative vapour density：
4.1 (Air = 1)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
Decomposes on contact with hot surfaces or flames. This produces toxic and corrosive gases of hydrogen chloride (see ICSC 0163), phosgene (see ICSC 0007), hydrogen fluoride (see ICSC 0283) and carbonyl fluoride (see ICSC 0633). Reacts violently with metals such as zinc and powdered aluminium. Attacks magnesium and its alloys.
Chemical stability
Stable up to 550 deg C.
Possibility of hazardous reactions
NONFLAMMABLE GASThe gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen.The reaction of aluminum with various halogenated hydrocarbons produces a self-sustaining reaction with sufficient heat to melt aluminum pieces, examples of other halogenated hydrocarbons are fluorotrichloromethane, dichlorodifluoromethane, chlorodifluoromethane, tetrafluoromethane. The vigor of the reaction appears to be dependent on the combined degree of fluorination and the vapor pressure, [Chem. Eng. News 39(27):44(1961)].
Conditions to avoid
no data available
Incompatible materials
Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc and magnesium.
Hazardous decomposition products
When heated to decomp it emits highly toxic fumes of phosgene and /hydrogen chloride and hydrogen fluoride/.
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 Rat single oral >1 g/kg
- Inhalation: LD50 Mouse inhalation 760,000 ppm/30 min
- 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
A4: Not classifiable as a human carcinogen.
Reproductive toxicity
no data available
STOT-single exposure
Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the cardiovascular system and central nervous system. This may result in cardiac disorders and central nervous system depression. Exposure could cause lowering of consciousness. See Notes.
STOT-repeated exposure
no data available
Aspiration hazard
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas.
SECTION 12: Ecological information
Toxicity
- 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
Persistence and degradability
AEROBIC: No evidence of dichlorodifluoromethane biodegradation was found in a microcosm designed to simulate Narragansett Bay in a month-long experiment(1). Dichlorodifluormethane was not biodegraded in soil samples from the Skellinggsted Landfall, Holbaek, Denmark(2). The soil at the site was a loamy sand - 5.7% silt, 88.1% sand, 5.3% gravel; 3.2% w/w organic content, 25% w/w moisture content(2).
Bioaccumulative potential
An estimated BCF of 12 was calculated in fish for dichlorodifluoromethane(SRC), using a log Kow of 2.16(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).
Mobility in soil
The Koc of dichlorodifluoromethane is estimated as 75(SRC), using a log Kow of 2.16(1) and a regression-derived equation(2). A Koc of 85 mL/g has also been reported, test conditions not specified(3). According to a classification scheme(4), these Koc values suggest that dichlorodifluoromethane is expected to have high mobility in soil. A log Koc value of 2.05 has been reported, using a batch experiment incubated with methane and a soil water content of 25% w/w(5).
Other adverse effects
no data available
SECTION 13: Disposal considerations
Disposal methods
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.
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.
SECTION 14: Transport information
UN Number
ADR/RID: UN1028 (For reference only, please check.)
IMDG: UN1028 (For reference only, please check.)
IATA: UN1028 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12) (For reference only, please check.)
IMDG: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12) (For reference only, please check.)
IATA: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12) (For reference only, please check.)
Transport hazard class(es)
ADR/RID: 2.2 (For reference only, please check.)
IMDG: 2.2 (For reference only, please check.)
IATA: 2.2 (For reference only, please check.)
Packing group, if applicable
ADR/RID: (For reference only, please check.)
IMDG: (For reference only, please check.)
IATA: (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
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 area.The odour warning when the exposure limit value is exceeded is insufficient.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.