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75-35-4

Name VINYLIDENE CHLORIDE
CAS 75-35-4
EINECS(EC#) 200-864-0
Molecular Formula C2H2Cl2
MDL Number MFCD00011653
Molecular Weight 96.94
MOL File 75-35-4.mol

Chemical Properties

Appearance Vinylidene chloride is a volatile liquid. Mild, sweet odor resembling chloroform. The odor threshold in air is 500 ppm.
Melting point  -122 °C (lit.)
Boiling point  30-32 °C (lit.)
density  1.213 g/mL at 20 °C(lit.)
vapor density  3.46 (vs air)
vapor pressure  9.68 psi ( 20 °C)
refractive index  n20/D 1.426
Fp  −9 °F
storage temp.  2-8°C
solubility  2.5g/l
form  Liquid
color  Clear colorless
Stability: Stable. Very flammable-note low flash point. Vapour may travel considerable distances to a source of ignition. Incompatible with strong oxidizing agents, alcohols, halides, sopper, aluminium. Rapidly absorbs oxygen from the air and forms explosive peroxides. Light and water promote self-polymerisation. May form explosive mix
explosive limit 8.4-16.5%(V)
Water Solubility  Soluble in water (2.5g/L at 20°C).
Sensitive  Light Sensitive
Merck  14,9996
BRN  1733365
Henry's Law Constant 0.86, 1.00, 1.27, 1.97, and 2.66 at 2.0, 6.0, 10.0, 18.0, and 25.0 °C, respectively (EPICS-SPME, Dewulf et al., 1999)
Dielectric constant 4.7(16℃)
Exposure limits TLV-TWA 5 ppm (~20 mg/m3) (ACGIH); TLV-STEL 20 ppm (ACGIH); carcinogenic ity: Animal Limited Evidence, Human Inad equate Evidence (IARC).
CAS DataBase Reference 75-35-4(CAS DataBase Reference)
IARC 2B (Vol. 39, Sup 7, 71, 119) 2019
EPA Substance Registry System 1,1-Dichloroethylene (75-35-4)

Safety Data

Hazard Codes  F+,Xn,T,F
Risk Statements 
R12:Extremely Flammable.
R20:Harmful by inhalation.
R40:Limited evidence of a carcinogenic effect.
R39/23/24/25:Toxic: danger of very serious irreversible effects through inhalation, in contact with skin and if swallowed .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable.
Safety Statements 
S7:Keep container tightly closed .
S16:Keep away from sources of ignition-No smoking .
S29:Do not empty into drains .
S36/37:Wear suitable protective clothing and gloves .
S46:If swallowed, seek medical advice immediately and show this container or label .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 1303 3/PG 1
WGK Germany  3
RTECS  KV9275000
1-8-10
Autoignition Temperature 968 °F
TSCA  Yes
HazardClass  3
PackingGroup  I
HS Code  29032990
Safety Profile
Suspected carcinogen with experimental carcinogenic, neoplastigenic, tumorigenic, and teratogenic data. Poison by inhalation, ingestion, and intravenous routes. Moderately toxic by subcutaneous route. Human systemic effects by inhalation: general anesthesia, liver and hdney changes. Experimental reproductive effects. Mutation data reported. See also VINYL CHLORIDE. A very dangerous fire hazard when exposed to heat or flame. Moderately explosive in the form of gas when exposed to heat or flame. It forms explosive peroxides upon exposure to air. Potentially explosive reaction with chlorotrifluoroethylene at 18O℃. Reaction with ozone forms dangerous products. Explosive reaction with perchloryl fluoride when heated above 100℃. Also can explode spontaneously. Reacts violently with chlorosulfonic acid, HNO3, oleum. Can react vigorously with oxidizing materials. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits toxic fumes of Cl-. See also CHLORINATED HYDROCARBONS, ALIPHATIC.
Hazardous Substances Data 75-35-4(Hazardous Substances Data)
Toxicity
Acute oral LD50 for rats 1,550 mg/kg, male mice 194 mg/kg, female mice 217 mg/kg (Jones and Hathway, 1978):dogs 5,750 mg/kg (Tierney et al., 1979). Heitmuller et al. (1981) reported a NOEC of 80 ppm.

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