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75-71-8 structure, CCl2F2
Dichlorodifluoromethane
CAS No.: 75-71-8 Formula: CCl2F2 Molecular Weight: 120.91400
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Dichlorodifluoromethane

CAS No.:

75-71-8

Formula:

CCl2F2

Molecular Weight: 120.91400
Suppliers: All (9) China Suppliers (9) Price Available (2) Contractor(0)

Description

Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. Complying with the Montreal Protocol, its manufacture was universally banned in 1996 due to concerns about its damaging impact to the ozone layer. Its only allowed usage is as fire retardant in submarines and aircraft. It is soluble in many organic solvents. Dichlorodifluoromethane was one of the original propellants for Silly String. R-12 cylinders are colored white.

Numbering system

UNII OFM06SG1KO

Properties

Appearance & Physical State

colourless odourless gas

Density

1.329

Boiling Point

-29.79ºC

Melting Point

-158ºC

Flash Point

11ºC

Refractive Index

1.169

Water Solubility

Insoluble. 0.028 g/100 mL

Stability

Stable. Non-flammable. May react violently with aluminium.

Storage Condition

2-8ºC

Safety Info

Hazard Class

2.2

Safety Statements

S23-S24/25-S59-S61

HS Code

2903772011

RIDADR

UN 1028/2602

Risk Statements

R20; R59

Hazard Codes

Xn; N

SDS 1.0

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SDS 1.0

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SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name Dichlorodifluoromethane

1.2 Other means of identification

Product number -
Other names dichloro difluoro methane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food Additives: FREEZING_AGENT; PROPELLANT
Uses advised against no data available

1.4 Supplier's details

Company MOLBASE (Shanghai) Biotechnology Co., Ltd.
Address Floor 4 & 5, Building 12, No. 1001 North Qinzhou Road,
Xuhui District, Shanghai, China
Telephone +86(21)64956998
Fax +86(21)54365166

1.5 Emergency phone number

Emergency phone number +86-400-6021-666
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

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 3

Hazardous to the ozone layer, Category 1

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Danger

Hazard statement(s)

H412 Harmful to aquatic life with long lasting effects

H420 Harms public health and the environment by destroying ozone in the upper atmosphere

Precautionary statement(s)
Prevention

P273 Avoid release to the environment.

Response

none

Storage

none

Disposal

P501 Dispose of contents/container to ...

P502 Refer to manufacturer or supplier for information on recovery or recycling

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
Dichlorodifluoromethane Dichlorodifluoromethane 75-71-8 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

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

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: some narcosis when 10% in air is breathed. (USCG, 1999)

4.3 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°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/

5.Fire-fighting measures

5.1 Extinguishing media

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.

5.2 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)

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

Ventilation.

6.3 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.

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

Separated from incompatible materials. See Chemical Dangers. Cool. Ventilation along the floor.Separated from incompatible materials. ... Cool. Ventilation along the floor.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

Recommended Exposure Limit: 10 Hour Time-Weighted Average: 1,000 ppm (4950 mg/cu m).

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 odourless gas
Colour Colorless gas ... [Note: Shipped as a liquified compressed gas]
Odour Practically odorless ... faint, ether-like odor in high concentration
Melting point/ freezing point -158ºC
Boiling point or initial boiling point and boiling range -29.79ºC
Flammability Nonflammable GasNot combustible. Gives off irritating or toxic fumes (or gases) in a fire.
Lower and upper explosion limit / flammability limit no data available
Flash point 11ºC
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 In water:Insoluble. 0.028 g/100 mL
Partition coefficient n-octanol/water (log value) log Kow = 2.16
Vapour pressure 5 atm at 16.11°C
Density and/or relative density 1.329
Relative vapour density 4.1 (Air = 1)
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Stable up to 550°C.

10.3 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)].

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Chemically-active metals such as sodium, potassium, calcium, powdered aluminum, zinc and magnesium.

10.6 Hazardous decomposition products

When heated to decomp it emits highly toxic fumes of phosgene and /hydrogen chloride and hydrogen fluoride/.

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

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 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

12.2 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).

12.3 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).

12.4 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).

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: UN1028 IMDG: UN1028 IATA: UN1028

14.2 UN Proper Shipping Name

ADR/RID: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12)
IMDG: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12)
IATA: DICHLORODIFLUORO- METHANE (REFRIGERANT GAS R 12)

14.3 Transport hazard class(es)

ADR/RID: 2.2 IMDG: 2.2 IATA: 2.2

14.4 Packing group, if applicable

ADR/RID: unknown IMDG: unknown IATA: unknown

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
Dichlorodifluoromethane Dichlorodifluoromethane 75-71-8 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 Not Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 17, 2017
Revision Date Aug 17, 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/

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.
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75-71-8 NMR spectrum
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