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 Transport Information
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4-Hydroxybenzenecarboxylic acid(99-96-7)

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 Transport Information

Product Identification

Product Name
4-Hydroxybenzenecarboxylic acid
Synonyms
4-Carboxyphenol
Paraben acid
p-Hydroxybenzoic acid
p-Salicylic acid
CAS
99-96-7
Formula
C7H6O3
Molecular Weight
138.12
EINECS
202-804-9
RTECS
DH1925000
RTECS Class
Drug
Merck
13,4837
Beilstein/Gmelin
970950
Beilstein Reference
4-10-00-00345
EC Class
irritant

Physical and Chemical Properties

Appearance
White to off-white.
Solubility in water
Very soluble
Melting Point
210 - 211
Boiling Point
336
Vapor Pressure
4E-5 (25 C)
Density
1.398 g/cm3
pKa/pKb
4.57 (pKa)
Partition Coefficient
1.58
Heat Of Vaporization
61.1 kJ/mol
Usage
Substance is used in org.
Vapor Density
1.46
Refractive Index
1.53

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
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 if irritation develops or persists. Flush skin with plenty of soap and water.
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
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion
May cause irritation of the digestive tract. Ingestion of large amounts may cause systemic effects such as nausea, stomach pain, rapid breathing, sweating, convulsions, coma, cardiovascular collapse and possible death.
Inhalation
Dust is irritating to the respiratory tract. May cause effects similar to those described for ingestion.
Skin
May cause skin irritation.
Eyes
May cause severe eye irritation. May result in corneal injury.
EC Risk Phrase
R 36/37/38
EC Safety Phrase
S 26 36

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 minimize contact with skin.
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.
Poison Class
4

Fire Fighting Measures

Flash Point
171
Autoignition
250
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, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.

Stability and Reactivity

Disposal Code
4
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code
2918 29 30
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