Sodium Bisulfite

Sodium bisulfite (NaHSO3) is a mixture, not a compound. It dissolves in water, forming solutions with sodium and bisulfite ions. It appears as white or yellowish crystals with a sulfur dioxide odor.

Category:

Sodium Bisulfite – General Introduction

 

Chemical Appearance:

Sodium bisulfite is a white, crystalline powder or solid substance.

 

Applications:

Sodium bisulfite finds diverse applications across various industries:

 

– Food and Beverage Industry:

Actively used as a food preservative and antioxidant to prevent spoilage and discoloration.

– Water Treatment:

Employed for dechlorination in water treatment processes to eliminate excess chlorine.

– Photography:

Utilized as a photographic developer and fixer in photographic processing.

– Textile Industry:

Applied in the textile industry for fabric bleaching and dye removal.

– Chemical Processing:

Used as a reducing agent in various chemical processes and industrial applications.

– Chemical Reactions:

Sodium bisulfite undergoes chemical reactions, particularly serving as a reducing agent in processes where oxygen removal is necessary.

 

Safety:

While generally considered safe for its intended applications, proper handling and adherence to safety guidelines are crucial.

 

Environmental Impact:

The environmental impact of sodium bisulfite is influenced by its usage context. Responsible disposal practices are essential to minimize any potential environmental effects.

 

Specification

inspection standard HG/T 3814-2006
inspecting item Standard requirements The measured results
Content (in S02),% 64.0~67.0 65.3
surface White crystal powder White crystal powder
water-insoluble,% ≤0.03 0.01
Chloride (in C1),% ≤0.05 <0.05
iron (Fe),% ≤0.004 <0.004
arsenic (As),% ≤0.0002 <0.0002
Heavy metals (in Pb),% ≤0.001 <0.001
PH Value (50g / L solution) 4.0~5.0 4.6

 

Product Name

Sodium Bisulfite

Form

crystaline, liquid

Formula

Nahso3

CAS No.

7681-57-4

HS Code

2832100000

EINECS No.

231-673-0

UN No.

2693

Type of Packing

25kg/bag

MOQ

1 x 20'FCL or negotiate if LCL shipment

1 x 20' FCL

Around 22MT

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