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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2,4-Diaminobenzenesulfonic acid(88-63-1)

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
2,4-Diaminobenzenesulfonic acid
Synonyms
1,3-Diaminobenzene-4-sulfonic acid
1,3-Diaminobenzene-6-sulfonic acid
1,3-Diaminobenzenesulfonic acid
2,4-Diaminobenzenesulfonic acid
4-n-Butylbenzoic acid
4-Sulfo-1,3-diaminobenzene
m-Phenylenediamine-4-sulfonic acid
p-Butylbenzoic acid
CAS
20651-71-2
CAS
88-63-1
Formula
C11H14O2
Formula
C6H8N2O3S
Molecular Weight
178.23
Molecular Weight
188.2
EINECS
201-846-5
EINECS
243-940-9
RTECS
DB5900000
RTECS Class
Primary Irritant
Beilstein/Gmelin
2694057
Beilstein/Gmelin
2044046
Beilstein Reference
4-09-00-01880
Beilstein Reference
2-14-00-00443

Physical and Chemical Properties

Appearance
Liquid.
Appearance
White crystalline powder.
Solubility in water
Slightly soluble
Solubility in water
Very soluble
Melting Point
100-103
Boiling Point
313
Boiling Point
406
pKa/pKb
4.36 (pKa)
pKa/pKb
2.90 (pKa)
Partition Coefficient
3.33
Partition Coefficient
-.41

First Aid Measures

Ingestion
Get medical aid. Wash mouth out with water.
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.
Inhalation
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Skin
May cause skin irritation.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
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
May cause eye irritation.
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.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
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.
Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation
Causes respiratory tract irritation. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. May be harmful if inhaled. May cause burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting.
Skin
Causes skin irritation. May be harmful if absorbed through the skin.
Eyes
Causes eye irritation.

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.
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

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. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
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.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability
No data.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong bases, oxidizing agents.
Incompatibilities
Strong oxidizing agents, acids, acid chlorides, carbon dioxide, acid anhydrides.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Decomposition
Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.
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