Product Identification

Product Name

1-Isocyanato-3-methylbenzene

Synonyms

1-Isocyanato-3-methylbenzene
3-Methylphenyl isocyanate
3-Tolyl isocyanate
Isocyanic acid, m-tolyl ester
m-Isocyanatotoluene

CAS

621-29-4

Formula

C8H7NO

Molecular Weight

133.15

EINECS

210-676-0

Beilstein/Gmelin

386149

Beilstein Reference

4-12-00-01831

Physical and Chemical Properties

Appearance

Clear yellow liquid.

Solubility in water

Insoluble

Melting Point

195 - 198

Boiling Point

90 (30 torr)

Density

1.033 g/cm3

Vapor Density

4.59

Refractive Index

1.53 (20 C)

First Aid Measures

Ingestion

Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. May cause irritation of the digestive tract and possible burns.

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. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.

Handling and Storage

Storage

Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C). Store protected from moisture.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Do not get on skin and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Do not allow contact with water. Use only in a chemical fume hood. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam. Do not breathe vapors.

Hazards Identification

Inhalation

Aspiration may lead to pulmonary edema. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. Inhalation at high concentrations may cause CNS depression and asphixiation. Harmful if inhaled. May cause respiratory sensitization.

Skin

Harmful if absorbed through the skin. May cause irritation and dermatitis. May cause cyanosis of the extremities. May cause sensitization by skin contact.

Eyes

May cause eye irritation. Lachrymator. May cause chemical conjunctivitis and corneal damage.

Ingestion

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

Hazards

Vapors form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff.

EC Risk Phrase

R 23/25 36/37/38 42

EC Safety Phrase

S 23 26 36/37/39 45

UN (DOT)

3080

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 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.

Exposure Effects

Repeated exposure may cause allergic respiratory reaction (asthma). Prolonged or repeated exposure may cause lung irritation, chest pain, and pulmonary edema.

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Combustible Liquid. Extinguishing media: Use water spray to cool fire-exposed containers. Do NOT get water inside containers. Use dry powder or carbon dioxide.

Fire Potential

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. Provide ventilation. Do not get water inside containers.

Stability and Reactivity

Incompatibilities

Moisture, heat, alcohols, strong bases, amines, acids, strong oxidizing agents, water.

Stability

Stable under normal temperatures and pressures.

Decomposition

Hydrogen cyanide, nitrogen oxides, carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

3080

Hazard Class

6.1

Packing Group

II