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SULFANILAMIDE CRYSTALS
CAS NO. 63-74-1  HS No.2935009090
Popular Name: C-SN
Chemical Name: P - Aminobenzene Sulfonamide.
Structure Formula:
Molecular Formula: C6H8O2N2S=172.21
Specifications: BPC 1968 BPC 1968(free dapson), BPC 1968(micron powder),NFXI EPV WS1-77B-89.
Packing: 25Kg  500Kg/Bag(Braided Bag)  25Kg/Drum(Fibre Drum)   25KG (Carton Box) or as per customer’request
Storage: store in cool and dry places avoided light.
Applications: sulfas, outer drug in use for inhibiting inflammation.

Items

BPC1968

NFX1

EPV

BPC1968(special)

WS1-77B-89

Appearance

White or almost white crystalline powder

White or almost white granules

Assay

≥99.0%

≥99.0%

≥99.0%

≥99.0%

≥99.0%

≥99.0%

≥99.0%

Melting point

164.5~166.5℃

164.5~166.5℃

164.5~166.0℃

164.5~166.5℃

164.5~166.5℃

164.5~166.5℃

164.5~166.5℃

Loss on drying

≤0.50%

≤0.50%

≤0.50%

≤0.50%

≤0.50%

≤0.50%

-

Chloride

≤0.035%

≤0.035%

/

≤0.035%

≤0.010%

≤0.035%

-

Sulfate

 

≤0.04%

 

 

 

 

 

Heavy metals

≤0.001%

≤0.002%

≤0.002%

≤0.001%

≤0.001%

≤0.001%

≤0.002%

Acidity

Accord with

Accord with

Accord with

Accord with

Accord with

Accord with

Accord with

Sulphated ash

≤0.10%

≤0.10%

≤0.10%

≤0.10%

≤0.10%

≤0.10%

≤0.10%

Alkali-insoluble matter

Clear

/

/

Clear

Clear

Clear

Iron

≤0.004%

/

≤0.004%

≤0.001%

≤0.004%

Related substance

/

/

≤0.5%

/

/

/

/

Dapsone

/

/

/

Not detected

Not detected

/

 

As

/

/

/

/

≤0.001%

/

 

Identification

Accord with

Accord with

Accord with

Accord with

Accord with

Accord with

Accord with

Particle size

=850um(sieve (2#) residue)

/

/

/

/

/

≤10um

≤0.5%

≤180um (5#sieve)

/

/

/

/

/

≤15%



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