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.

Accidental Release Measures

Small spills/leaks

Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents, strong reducing agents, strong acids, strong bases.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide, cyanide fumes.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2811

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2926 90 95