Naphthol yellow S, Synonyms- 7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid disodium salt; Acid Yellow 1, C. I. No. 10316, CAS No. 846-70-8, MSDS, Stains and Indicators Manufacturer, Exporter, Supplier, Mumbai, India| Unisource Chemicals Pvt. Ltd.

Specification

Product Name

NAPHTHOL YELLOW S

Synonyms

7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid,
disodium salt; Acid Yellow 1

CAS NO.

846-70-8

C. I. No.

10316

Molecular Formula

C₁₀H₄N₂Na₂O₈S

Formula Weight

358.18

Appearance

A Brownish Orange Powder

Structure

Tests

Limits

Dye Content

- 75%

Solubility Of 2 % Solution In D.W.

- Clear And Orange, Exhibits
Yellowish Green Fluorescence

pH (2% Soltn In D.W. Ph=7)

- 7-9

Loss On Drying (135º C For 1hr)

- < 5

REVISED: 1-1-2012