Chemical manufacturer in China
WhatsApp:+8613763351969
PATH:Download COA

Pre-sale COA is not the latest batch

ISO 9001:2015


Certificate of Analysis
Product Name: 6-Hydroxynaphthalene-2-sulphonic acid Catalogue Number: GR-7117
Batch Size: 20KG Lot Number: 20230101
CAS Number: 93-01-6 Production Date:
Molecular Formula: C10H8O4S Report Date: 2023-01-01
Molecular Weight: 224.23 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White to Light yellow to Light orange powder to crystal Conforms
Purity ≥97.0% 99.0%
Insolubles ≤0.5% 0.08%
Beta naphthol ≤0.1% 0.04%
2 Naphthol 3,6 DSA ≤0.5% 0.13%
2 Naphthol 6,8 DSA ≤0.5% 0.12%
signature
Prepared by: Reviewed by: Aproved by General manager:
Date: Date: Date:
Copyright © Zhongshan Greenrock Technology Co., Ltd. Design By Darren.Li