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Certificate of Analysis
Product Name: METHYLENE BLUE Catalogue Number: GR-16211647
Batch Size: 500KG Lot Number: 20230602
CAS Number: 122965-43-9 Production Date:
Molecular Formula: C16H20ClN3OS Report Date: 2023-06-02
Molecular Weight: 337.9 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance Iridescent green-black powder Conforms
Purity ≥98.5% 99.21%
Loss on drying ≤15.0% 6.93%
Ignition residue ≤0.5% 0.2%
As ≤5 ppm Conforms
Cu ≤0.03% 0.01%
Zn ≤0.02% 0.01%
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Date: Date: Date:
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