4-Hydroxybenzoic acid 99-96-7 large in promotion CAS NO.99-96-7

【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【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 back to contents
【hs code】

2918 29 30