1. Industrial Anhydrous sodium sulfite
Molecular Formula: Na2SO3
Molecule Weight: 126.04
Appearance: White or light yellow crystalline powder
Quality standard: HG/T 2967__2000

Item
Value

Top-grade
First grade
Qualified product

Sodium sulfite (Na2SO3), %
¡Ý 97.0
¡Ý 96.0
¡Ý 93.0

Fe, %
¡Ü 0.003
¡Ü 0.005
¡Ü 0.02

Water-Insoluble, % water-Insoluble, %
¡Ü 0.02
¡Ü 0.03
¡Ü 0.05

Free alkali(as Na2SO3), %
¡Ü 0.10
¡Ü 0.40
¡Ü 0.80

Sulfate(as Na2SO4), %
¡Ü 2.5
_
_

Chloride(as NaCl), %
¡Ü 0.10
_
_


Uses: Used in leather and tannage, plant bleaching agent, reductant

Packing: In polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.

Net weight: 25, 50, 1000kilograms per bag or following your demand.

2. Food grade Anhydrous sodium sulfite
Molecular Formula: Na2SO3
Molecule Weight: 126.04
Appearance: White or light yellow crystalline powder
Quality standard: GB1894__2005

Company standard

Item
Value

Sodium sulfite (Na2SO3), mass fraction /%
¡Ý 97.0

Fe, mass fraction /%
¡Ü 0.01

Free alkali(as Na2SO3), mass fraction /%
¡Ü 0.60

Heavy metals(as Pb), mass fraction /%
¡Ü 0.001

As (As), mass fraction /%
¡Ü 0.0002

Clarity
Passed

Uses: Dechlorinating agent, bleaching agent, developer, reductant, stabilizer, or used in papermaking, electronic and water treatment industry.

Packing: In polythene plastic bag with a polypropylene overbag, paper-plastic composite bag, kraft bag, etc.

Net weight: 25, 50, 1000kilograms per bag or following your demand.