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
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5-Amino-1,3-dihydro-2H-benzimidazol-2-one(95-23-8)

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

Product Identification

Product Name
5-Amino-1,3-dihydro-2H-benzimidazol-2-one
Synonyms
2H-Benzimidazol-2-one, 5-amino-1,3-dihydro-
5-Amino-1,3-dihydrobenzimidazol-2-on
CAS
95-23-8
Formula
C7H7N3O
Molecular Weight
149.15
EINECS
202-401-8
Beilstein/Gmelin
137924
Beilstein Reference
5-25-15-00032

Physical and Chemical Properties

Appearance
Solid.
Boiling Point
201
Vapor Pressure
0.31 (25 C)
pKa/pKb
7.48 (pKb)
Partition Coefficient
-.17
Heat Of Vaporization
43.8 kJ/mol
Heat Of Combustion
-3337 kJ/mol

First Aid Measures

Ingestion
Get medical aid. Wash mouth out with water.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes
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 cool, dry place. Store in a tightly closed container.
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification

Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
Inhalation
Causes respiratory tract irritation. May be harmful if inhaled.
Skin
Causes skin irritation. May be harmful if absorbed through the skin.
Eyes
Causes eye irritation.

Exposure Controls/Personal Protection

Personal Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point
76
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use foam, dry chemical, or carbon dioxide.

Accidental Release Measures

Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Stability
No data.
Incompatibilities
Strong oxidizing agents, acids, acetic anhydride, acid chlorides, carbon dioxide.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.
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