Sodium dithionite (also known as sodium hydrosulfite) is a white crystalline powder with a sulfurous odor. Although it is stable in dry air, it decomposes in hot water and in acid solutions. Except where otherwise noted, data are given for materials in their standard state (at 25 degree C, 100 kPa).

Application

APPLICATION

Sodium hydrosulfite is a versatile chemical and is used mainly in textile dyeing, manufacturing of pulp and paper, commercial bleaching agent, bleaching of foodstuffs and as a reducing agent in hair treatment.

Technical Specification

PROPERTIES

• Title: Sodium Hydrosulfite.
• CAS Registry Number: 7775-14-6.
• Additional Names: Sodium sulfoxylate; sodium dithionite.
• Molecular Weight: 174.11.
• Percent Composition: Na 26.41%, O 36.76%, S 36.83%
• Properties: White or grayish-white, crytile powder; slight characteristic odor.