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o-Phthalodinitrile(91-15-6)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
o-Phthalodinitrile

Synonyms
1,2-Benzenedicarbonitrile
1,2-Dicyanobenzene
o-Dicyanobenzene

CAS
91-15-6

Formula
C8H4N2

Molecular Weight
128.13

EINECS
202-044-8

RTECS
TI8575000

RTECS Class
Agricultural Chemical and Pesticide; Tumorigen

Beilstein/Gmelin
775028

Beilstein Reference
4-09-00-03268

EC Class
toxic

Physical and Chemical Properties

Appearance
Buff-colored crystals, slightly aromatic odor.

Solubility in water
Slightly soluble

Melting Point
138 - 141

Boiling Point
305

Vapor Pressure
0.001 (25 C)

Density
1.1 g/cm3 (20 C)

Partition Coefficient
1.25

Heat Of Vaporization
54.5 kJ/mol

Heat Of Combustion
-280.6 kJ/mol

Usage
Intermediate in organic synthesis, esp pigments & dyes, base material for high temp lubricants & coatings.

Saturation Concentration
65.8 ppm (0.007%) at 20 C (calculated)

First Aid Measures

Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.

Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Keep container closed when not in use. Store in a cool, dry area away from incompatible substances.

Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Use only in a chemical fume hood. Discard contaminated shoes.

Hazards Identification

Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Inhalation
May cause respiratory tract irritation. May cause irritation of the mucous membranes.

Skin
Causes skin irritation. Substance is readily absorbed through the skin.

Eyes
May cause eye irritation.

Hazards
Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase
R 24/25

EC Safety Phrase
S 22 36/37 45

UN (DOT)
2811

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Poison Class
2

Fire Fighting Measures

Flash Point
154

Autoignition
> 580

Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.