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Certificate of Analysis
Product Name: 2-AMINOETHANETHIOSULFONIC S-ACID Catalogue Number: GR-6858023
Batch Size: 50KG Lot Number: 20230805
CAS Number: 2937-54-4 Production Date:
Molecular Formula: C2H7NO2S2 Report Date: 2023-08-05
Molecular Weight: 141.22 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White to light-yellow powder Conforms
Purity ≥98.5% 99.3%
pH(1% in Water) 4.5~6.5 4.8
Loss on drying ≤1.0% 0.5%
Ignition residue ≤0.5% 0.2%
Pb ≤10 ppm Conforms
As ≤2 ppm Conforms
Hg ≤1 ppm Conforms
Cd ≤1 ppm Conforms
Total bacterial count ≤200 cfu/g <10 cfu/g
Molds and yeast count ≤100 cfu/g <10 cfu/g
Thermotolerant Coliforms ND ND
Staphylococcus aureus ND ND
P.Aeruginosa ND ND
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