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Certificate of Analysis
Product Name: Direct Black 19 Catalogue Number: GR-135430271
Batch Size: 800KG Lot Number: 20230305
CAS Number: 6428-31-5 Production Date:
Molecular Formula: C34H27N13Na2O7S2 Report Date: 2023-03-05
Molecular Weight: 839.8 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance Black solid Conforms
Strength 100% Conforms
signature
Prepared by: Reviewed by: Aproved by General manager:
Date: Date: Date:
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