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CAS No. 7772-98-7 | Sodium thiosulfate

Name: Sodium thiosulfate CAS No. 7772-98-7 MF:Na2S2O3·5H2O MW:248.17 Purity:99% Package: 25kg,50kg per bag or Customized packaging according to customer requirements Worldwide Delivery

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Industrial Chemicals

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Product introduction

Introduction and application of CAS No. 7772-98-7 | Sodium thiosulfate

Specification:

ITEMS	SPECIFICATION
CAS	7772-98-7
MF	Na2S2O3·5H2O
MW	248.17
Physical and chemical properties	Monoclinic crystal
Melting point	40-45℃
Relative density	1.729 (17℃).

Quality Index：

Item	Photographic grade	Industrial grade	Waterless grade
Appearance	colorless transparent crystal	colorless transparent crystal	White powder
Purity	≥99.00%	≥98.5%	≥97.0%
Water insoluble matter	≤0.01%	≤0.03%	≤0.03%
sulfide	≤0.001%	≤0.003%	≤0.001%
Fe	≤0.001%	≤0.003%	≤0.005%
PH	6.5~9.5	6.5~9.5	6.5~9.5
Aqueous solution reaction	Conform to test	Conform to test	Conform to test
Particle size (grains/g)	12~16	12~16	12~16

Usage:

Used in industries such as photographic fixative, electroplating, leather, reducing agent, bleaching and dyeing dechlorination agent, sulfur dye, anti-whitening agent, disinfectant and fading agent.

Package and transportation :

Package: Packed in 25kg or 50kg plastic woven bags, or customized packaging according to customer requirements.

Transportation: by courier/ by air/ by sea

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