Difluoromethane

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Names

[ CAS No. ]:
75-10-5

[ Name ]:
Difluoromethane

[Synonym ]:
MFCD00039283
F32
EINECS 200-839-4
Methane, difluoro-
Freon 32
CH2F2
R 32
methylene difluoride
CFC32
HFC-32
1,1-difluoro-methane
FC-32
methylene fluoride
HFA-32
Difluoromethane

Chemical & Physical Properties

[ Density]:
0.9±0.1 g/cm3

[ Boiling Point ]:
-62.2±8.0 °C at 760 mmHg

[ Melting Point ]:
−136 °C(lit.)

[ Molecular Formula ]:
CH₂F₂

[ Molecular Weight ]:
52.023

[ Flash Point ]:
-78.5±6.3 °C

[ Exact Mass ]:
52.012455

[ LogP ]:
0.30

[ Vapour Pressure ]:
13163.8±0.1 mmHg at 25°C

[ Index of Refraction ]:
1.196

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: PA8537500

CHEMICAL NAME :: Methane, difluoro-

CAS REGISTRY NUMBER :: 75-10-5

LAST UPDATED :: 199806

DATA ITEMS CITED :: 5

MOLECULAR FORMULA :: C-H2-F2

MOLECULAR WEIGHT :: 52.03

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LC - Lethal concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >52 pph/4H

TOXIC EFFECTS :: Brain and Coverings - recordings from specific areas of CNS

REFERENCE :: FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 31,243,1996

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1810 gm/m3

TOXIC EFFECTS :: Behavioral - changes in motor activity (specific assay) Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: TOVEFN Toksikologicheskii Vestnik. (18-20 Vadkovskii per. Moscow, 101479, Russia) History Unknown Volume(issue)/page/year: (1),27,1996 ** REPRODUCTIVE DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

DOSE :: 50000 ppm/6H

SEX/DURATION :: female 6-15 ? after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

REFERENCE :: FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 31,243,1996

Safety Information

[ Hazard Codes ]:
F:Flammable;

[ Risk Phrases ]:
R11

[ Safety Phrases ]:
S9-S16-S33

[ RIDADR ]:
UN 3252 2.1

[ WGK Germany ]:
1

[ RTECS ]:
PA8537500

[ Hazard Class ]:
2.1

[ HS Code ]:
2903399090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

Dichloromethane
Chlorofluoromethane
Difluorochloromethane
Dibromodifluoromethane
Dichlorodifluoromethane
Sodium chlorodifluoroacetate
Bromochloromethane
1-(difluoro(phenylsulfonyl)methyl)-3,3-dimethyl-1,3-dihydro-1l3-benzo[d][1,2]iodaoxole
Ammonia
Diiodomethane

DownStream

1,1,2,2-tetrafluoroethane
trifluoroethylene
Pentafluoroethane
3-Chloro-1,1,1,2,3-pentafluoropropane
1,1-dichloro-2,2-difluoroethane
Propane,1,1,1,2,2,3-hexafluoro-
hexafluoroethane
1,1,1,2,2-pentafluoropropane
Carbon tetrafluoride
Trifluoromethane

Customs

[ HS Code ]: 2903399090

[ Summary ]:
2903399090. brominated,fluorinated or iodinated derivatives of acyclic hydrocarbons. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%