Product Identification

Product Name

Himic anhydride

Synonyms

2-Norbornene-5,6-dicarboxylic anhydride
3,6-Methano-4-cyclohexene-1,2-dicarboxylic acid anhydride
4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-
5-Norbornene-2,3-dicarboxylic anhydride
Bicyclo(2.2.1)-hept-5-ene-2,3-dicarboxylic anhydride
Endomethylenetetrahydrophthalic anhydride

CAS

826-62-0

Formula

C9H8O3

Molecular Weight

164.16

EINECS

212-557-9

RTECS

DT5600000

RTECS Class

Primary Irritant

Beilstein/Gmelin

1620033

Beilstein Reference

5-17-11-00192

EC Index Number

607-105-00-6

EC Class

Irritant; Sensitising

Physical and Chemical Properties

Appearance

White solid.

Solubility in water

Soluble

Melting Point

155 - 160

Vapor Density

1.417

First Aid Measures

Ingestion

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

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.

Skin

Get medical aid. 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.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

Handling

Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation. Do not allow contact with water. Keep from contact with moist air and steam.

Hazards Identification

Inhalation

May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Causes chemical burns to the respiratory tract. Can produce delayed pulmonary edema.

Skin

May cause severe irritation and possible burns.

Eyes

Contact with eyes may cause severe irritation, and possible eye burns. May cause chemical conjunctivitis.

Ingestion

May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Contact with metals may evolve flammable hydrogen gas.

UN (DOT)

1759

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

Effects may be delayed.

Fire Fighting Measures

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. Extinguishing media: Do NOT use water directly on fire. Do NOT get water inside containers. In case of fire, use carbon dioxide, dry chemical powder 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. Provide ventilation. Do not get water inside containers.

Stability and Reactivity

Incompatibilities

Moisture, water, strong oxidizing agents.

Stability

Stable at room temperature in closed containers under normal storage and handling conditions. Reacts with water to form corresponding acid.

Decomposition

Carbon monoxide, carbon dioxide.

Combustion Products

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

Transport Information

UN Number

1759

Hazard Class

8

Packing Group

I; II; III