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109-77-3

Name Malononitrile
CAS 109-77-3
EINECS(EC#) 203-703-2
Molecular Formula C3H2N2
MDL Number MFCD00001883
Molecular Weight 66.06
MOL File 109-77-3.mol

Chemical Properties

Appearance Malononitrile is a white powder or colorless, odorless crystalline substance.
Melting point  30-32 °C (lit.)
Boiling point  220 °C (lit.)
density  1.049 g/mL at 25 °C(lit.)
vapor pressure  1 hPa (50 °C)
refractive index  1.4150
Fp  234 °F
storage temp.  2-8°C
solubility  133g/l
form  Crystalline Low Melting Mass
pka 11(at 25℃)
color  White to yellow-brown
Specific Gravity 1.049
PH pH : 4.5
Water Solubility  13.3 g/100 mL (20 ºC)
Usage Malononitrile is an important building block for the syntheses of pharmaceuticals (e.g. triamterene, adenine and methotrexate), thiamin (vitamin B1), pesticides dyestuffs for color photography and synthetic fibers (e.g. vinylidene cyanide). Product Data Sheet
Detection Methods GC
Merck  14,5711
BRN  773697
Dielectric constant 46.0
Exposure limits TLV-TWA 8 mg/m3 (3 ppm) (NIOSH).
InChIKey CUONGYYJJVDODC-UHFFFAOYSA-N
CAS DataBase Reference 109-77-3(CAS DataBase Reference)
NIST Chemistry Reference Malononitrile(109-77-3)
EPA Substance Registry System 109-77-3(EPA Substance)

Safety Data

Hazard Codes  T,N
Risk Statements 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
Safety Statements 
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S27:Take off immediately all contaminated clothing .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
RIDADR  UN 2647 6.1/PG 2
WGK Germany  3
RTECS  OO3150000
8
Autoignition Temperature 365 °C
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29269090
Safety Profile
Poison by ingestion, skin contact, subcutaneous, intravenous, and intraperitoneal routes. A severe eye irritant. Combustible when exposed to heat or flame. Polymerizes violently when heated to 130°C or on contact with strong base. May spontaneously explode when stored at 70-80°C. To fight fire, use water, fog, spray, foam. When heated to decomposition it emits toxic fumes of NOx and CN-. See also NITRILES.
Hazardous Substances Data 109-77-3(Hazardous Substances Data)
Toxicity
LD50 i.p. in mice: 12.9 mg/kg (Jones, Israel)

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