Product: Sodium hydrosulfite
Another name: Sodium thiosulfate
Molecular Formula: Na2S2O4
Molecular Weight: 174.10
Property:
Sodium hydrosulfite is a white crystalline powder with weak sulfurous odor. It is readily soluble in water, insoluble in alcohol.
Application: Widely used in printing and dyeing industry,can be used as a reducing agent for vat dyes,disperse dyes can be used to restore the clean,reactive dyes can be used for stripping color,silk,hair bleach,food bleaching agent,the depositary agent,antioxidant agents,preservation agents,bleaching of paper,industrial bleaching agent,processing,reducing agent,sulfonating agent.
Specification:
|
Item
|
90%
|
88%
|
85%
|
|
Na2S2 O4
|
≥ 90%
|
≥ 88%
|
≥ 85%
|
|
(Fe)
|
≤ 20ppm
|
≤ 20ppm
|
≤ 20ppm
|
|
(Zn)
|
≤ 1ppm
|
≤ 1ppm
|
≤ 1ppm
|
|
Clarity
|
Clarify
|
Clarify
|
Clarify
|
|
EDTA
|
-
|
-
|
-
|
|
(As)
|
-
|
-
|
-
|
|
Other heavy metals(pb)
|
-
|
-
|
-
|
|
HCHO
|
-
|
-
|
-
|
|
water insoluble matter
|
≤ 0.05%
|
≤ 0.05%
|
≤ 0.05%
|
Packing: Polyethylene film bag lined with double layer, 50kg/iron drum.