2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-(3-nitrophenyl)diazenyl]-, sodium salt (1:2)

CAS NO.：5858-29-7
Empirical Formula: C16H11N3Na2O9S2**
Molecular Weight: 499.38278
SAFETY DATA SHEET (SDS)

What is 2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-(3-nitrophenyl)diazenyl]-, sodium salt (1:2)?

Preparation

M-nitroaniline diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid.

Properties and Applications

orange. Red orange powder. Soluble in water and ethanol, in 90 ℃ water solubility of 50 g/L, also can dissolve in acetone. The strong sulfuric acid dyes for product red, dilute to orange. The water solution is orange, and strong hydrochloric acid to red light orange; Add thick sodium hydroxide solution for orange still.

Safety information for 2,7-Naphthalenedisulfonicacid, 3-hydroxy-4-[2-(3-nitrophenyl)diazenyl]-, sodium salt (1:2)

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