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4,4-DiaminoDiphenylSulphone

4,4-Diamino Diphenyl Sulphone is used as an additive in the polymer industries.

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4,4-Dichlorodiphenyl sulfone

4,4-Dichlorodiphenyl Sulfone is used as an additive in polymer industries and also in laboratories for the manufacture of various substances.

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4-hydroxybenzoic acid USP >99%

4-Hydroxybenzoic Acid

 

Basic Information

Product number: SX1001

Chemical name: 4-Hydroxybenzoic acid

Molecular formula:C7H6O3
Molecular weight:138.12
CAS No. :99-96-7

EINECS No. :202-804-9

 

Physical and chemical properties

Molecular weight: 138.13

Density: 1.443g/cm3

Melting point: 213-214℃

Boiling point:336.2°C at 760 mmHg

Flash point:171.3°C

Appearance: white powdery crystal, no odor and taste.

Solubility: Easily soluble in hot water, alcohol, ether, and acetone, slightly soluble in cold water and benzene, insoluble in carbon disulfide.

 

Detailed Description

Quality standard: Q/SH 005-2014

Item

Index

Polymerization level

Industrial grade

Appearance

White crystalline powder

White crystalline powder

Content (dry basis) %≥

99.6

99.0

Melting point ℃

214-217

212-216

Odor

No odor

No odor

Solubility

Clear and transparent

Clear and transparent

Drying loss %≤

0.20

0.50

Color (Pt-Co)≤

10

40

Ash content % ≤

0.02

0.15

Sulfate (SO42-) % ≤

0.01

0.05

Chloride (Cl-) % ≤

0.005

0.02

Phenol % ≤

0.01

0.10

Salicylic acid % ≤

0.02

0.10

4-hydroxyisophthalic acid ppm ≤

500

/

Methanol-insoluble matters ppm ≤

50

/

Potasium (K+) ppm

5

/

Sodium (Na+) ppm ≤

5

/

Iron (Fe) ppm ≤

5

/

Calcium+Magnesium (Ca2++Mg2+)ppm ≤

10

/

 

Application

The product can be used as preservative, dye, pharmaceutical and injection intermediate. It is main raw material of liquid crystal polymer and raw material of pesticide intermediate.
 

Packing

Double-layer plastic woven bag, net weight is 25kg, or PP bag, net weight is 500kg/bag or 1000kg/bag.
*Special requirements can be negotiated

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