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L-Cysteine HCL Anhydrous
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L-Cysteine HCL Anhydrous

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INTRODUCTION
Parameters

Product

L-Cysteine Hydrochloride Anhydrous

CAS No.

52-89-1

EINECS

200-157-7

Molecular Formula

C3H8ClNO2S

Molecular Weight

157.62

Structural Formula

Quality Standard

AJI92

Packing

25kg per drum with inner PE bag

Shelf Life

12 Months

Preserve in well-closed containers and protected from light

Specification

Standard

Identification

Infrared Absorption

Appearance

White crystalline powder

Specific rotation[α]D20

+5.6o~+8.9o

State solution(Transmittance)

Clear and colorless Not less than 98.0%

Chloride(Cl)

22.30%~22.60%

Ammonium(NH4)

Not more than 0.02%

Sulphate (SO4)

Not more than 0.02%

Iron (Fe)

Not more than 10ppm

Heavy metals (Pb)

Not more than 10ppm

Arsenic(As2O3)

Not more than 1ppm

Other Amino acids

Chromatographically Not detectable

Loss on drying

Not more than 1.0%

Residue on ignition(Sulfated)

Not more than 0.1%

Assay

98.0~102.0%

pH value

1.5~2.0

Total plate count

≤ 1000cfu/g

Yeast & Molds

≤ 100cfu/g

Coliforms

≤ 10cfu/g

E Coli

Negative

Salmonella

Negative

Pseudomonas

Negative

S.Aureus

Negative

 

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