对羟基苯甲酸－TECH.

P-HYDROXYBENZOIC ACID

 

SYNONYM: 4-HYDROXYBENZOIC ACID

 

FORMULA: C7H6O3

 

M. W.: 138.1226

 

CAS NO.: 99-96-7

 

GRADE: TECH.GRADE

 

APPEARANCE: THIS PRODUCT IS WHITE CRYSTAL POWDER WITHOUT ANY SMELL BUT IS ASTRINGENT. IT IS EASILY DISSOLVED IN HOT WATER, ALCOHOL, ETHER, ACETONE; SLIGHTLY DISSOLVED IN COLD WATER, BENZENE, AND NOT DISSOLVED IN CARBON BISULFIDE. IT IS DISSOLVED IN 125 COLD WATER AND RELATIVE DENSITY IS 1.46.

 

SPECIFICATIONS:

PURITY (ON DRY BASE)

99.0% MIN.

MELTING POINT

213-216℃

SOLUBILITY

CLEAR AND TRANSPARENT

LOSS ON DRYING

0.50% MAX.

COLOR (Pt-Co)

40 MAX.

ASH

0.15% MAX.

SULFATE (SO42-)

0.05 MAX.

CHLORIDE (Cl-)

0.02% MAX.

PHENOL

0.10% MAX.

SALICYLIC ACID

0.10% MAX.

 

USES； THIS PRODUCT COULD BE USED AN INTERMEDIATE OF ANTISEPTICS, DYESTUFF, MEDICINE AND INJECTION MOLDING. NIPAGINS COULD BE GAINED BY ITS ESTERFICATION WITH ALCOHOL. IT IS ALSO THE MAIN RAW MATERIAL FOR LIQUID CRYSTAL POLYMER AND MATERIAL FOR PESTICIDE INTERMEDIATES

 

PACKING: IT IS PACKED WITH BRAIDED PLASTIC BAGS WITHIN DOUBLE PE LININGS. EACH HAS NET WEIGHT OF 25 KG. THOSE PACKED WITH PP BAG HAS ITS NET WEIGHT OF 500 KG/B OR 1000 KG/B.

 

H.S.NO.: 2916.3990