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DL-Methionine

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INTRODUCTION
Parameters

Product

DL-Methionine

CAS No.

59-51-8

Molecular Formula

C5H11NO2S

Molecular Weight

149.21

Structural Formula

Quality Standard

USP/EP/BP/FCC

Packing

25kg paper drum with inner double PE bags

Shelf Life

2 Years

Storage

Store in dry and cool place, and keep far away from sunlight

Specification

Standard

Appearance

White crystalline powder

Identification

The IR spectrum corresponds to that of the reference standard

Assay (on dried matter)

98.5~101.5%

Clarity of solution

Clear, colorless

pH value (1g/100mL in water)

5.6~6.1

Chloride(as Cl)

≤0.05%

Heavy metals (as Pb)

≤0.0015%

Lead (as Pb)

≤0.001%

Arsenic(as As)

≤0.00015%

Loss on drying

≤0.3%

Sulphate (SO4-2)

≤0.03%

Iron (as Fe)

≤0.003%

Residue on ignition (as sulphate ash)

≤0.4%

Organic volatile impurities

Meets the requirement

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Please feel free contact AWI team via sales@awelling.com for more details, your inquiry will be replied within 1 working day.

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