BGC > Product Search > 4-Hydroxybenzene sulfonic acid | 98-67-9

Identification
A.H-NMR	Comply with the structure
B.LC-MS	Comply with the structure
C.	The IR spectrum of sample should be identical with that of reference standard;
D.HPLC-ESI-MS	The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay.
Crystallinity	meets the requirements.
Loss on drying	≤ 2.0%
Heavy metals	≤ 10 ppm
Water	≤ 1.0%
Sulphated ash	≤ 0.5%, determined on 1.0 g.
Related substances
Unspecified impurities
for each impurity	≤ 0.10%
Total Impurity	≤ 0.5%
Purity	≥ 99.0%
Assay	99.0%~101.0% (anhydrous substance).
Microbiological Analysis
Total plate count	≤ 1000cfu/g
Yeast and Moulds	≤ 100cfu/g
E. Coli.	Absent
Salmonella	Absent
S.aureus	Absent

Molecular Formula: C6H6O4S
Molecular Weight: 174.17
Hazard Symbols: C
UN Number: UN 2586 8/PG 3
WGKGermany: -
PackingGroup: III
HS Code: 29089990