Description
Sodium sulfite is an inorganic compound with the chemical formula Na₂SO₃. It appears as a white, water-soluble solid and is commonly used as an antioxidant and preservative. This compound is also utilized in various industrial processes, including the softening of lignin in the pulping and refining processes of wood and lignocellulosic materials.
Application
Industry Grade : Used in Dyeing and printing Industry ,as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.
Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as antifermentative. In starch and sweeteners production as bacteriostatic.
Photo Grade: In the photographic industry as component of developer bath .
Pharmaceutical Grade : pharmaceutical industry for the production of chloroform, benzene and formaldehydephenylpropanoid Sulfone
Specifications
Specification for Industry Grade and Food Grade
Item | Quality Index | |
Industry Grade | Food Grade | |
Purity ( As Na2SO3) | 96.0% min | 98.0% min |
Sodium sulphate ( SO4) | 2.5% max | 1.5% max |
Chlorides ( As NaCL) | 0.5% max | 0.1% max |
Arsenic ( As ) | - | 0.0002% max |
Heavy metals ( As Pb ) | - | 0.0005% max |
Iron (Fe) | 0.005% max | 0.002% max |
Water insolubles | 0.05% max | 0.02% max |
Specification For Photo Grade and Pharmaceutical Grade
Item | Quality Index | |
Photo Grade | Pharmaceutical Grade | |
Purity ( As Na2SO3) | 98.0% min | 98.0% min |
Sodium sulphate ( SO4 ) | 1.5% max | 1.5% max |
Chlorides ( As CL-) | 0.05% max | 0.05% max |
Arsenic ( As ) | 0.0002% max | 2ppm max |
Lead ( As Pb) | 0.0005% max | 2ppm max |
Iron (Fe) | 0.001% max | 5ppm max |
Selenium ( Se) | 0.0001% max | 1ppm max |
Zinc ( Zn) | 0.0001% max | 1ppm max |
Copper ( Cu ) | 0.0001% max | 0.1ppm max |
Mercury ( Hg) | 0.0001% max | 0.1 ppm max |
Packaging specifications
25KG bag 1000KG ton bag
Certifications
ISO 9001. ISO 22716. cGMP certified
Kosher, Halal certified
Shipping Information
MOQ: (Due to the nature of chemical transportation, please consult the sea trade manager for details!)
Port of Loading: CHINA - Shanghai Port, Ningbo Zhoushan Port, Guangzhou Port, Qingdao Port, Tianjin Port, Dalian Port, Xiamen Port, Lianyungang Port (can be ensured according to the requirements of customers)
Delivery Time: 4-6 weeks
Payment Terms
L/C, D/P, T/T at buyer’s cost
Sample available on request
Multiple Names
anhydroussodiumsulfite
disodiumsulfite
exsiccatedsodiumsulfite
natriisulphis
natriumsulfid
natriumsulfit
natriumsulfurosum
sodiumsulfite(2:1)
sodiumsulfite[na2so3]
sulfitedesodium
sulftech
Sulfurousacid,disodiumsalt
sulfurousacid,sodiumsalt(1:2)
s-wat
Sodium sulfite, ACS, 98.0% min
SODIUM SULFITE ANHYDROUS GRANULAR
Sodium sulfite anhydrous
SODIUM SULFITE, EXSICCATED
SODIUM SULPHITE
SODIUM SULPHITE ANHYDROUS extrapure AR
sodium sulfite anhydrous,for food
Sodium sulfite, 97%, anhydrous, extra pure
Sodium sulfite, 98.5%, anhydrous, for analysis
SODIUM SULFITE, 98+%, ANHYDROUS, FOR ANALYSIS ACS
Sodium sulfite, anhydrous, for analysis
Sodium sulfite, anhydrous, for analysis ACS
Sulfurous acid disodium
Sodium sulfite
Sodium Sulfite, Acs Min
Sodium sulfite,98.5%,for analysis,anhydrous
Sodium sulfite,97%,extra pure,anhydrous
Sodium sulfite,98+%,for analysis ACS,anhydrous
SODIUM SULFITE, REAGENT (ACS)SODIUM SULFITE, REAGENT (ACS)SODIUM SULFITE, REAGENT (ACS)
SODIUM SULFITE, ZERO DISSOLVED OXYGEN SOLUTIONSODIUM SULFITE, ZERO DISSOLVED OXYGEN SOLUTIONSODIUM SULFITE, ZERO DISSOLVED OXYGEN SOLUTION
Sodium sulfite anhydrous, AR,98.0%
SODIUM SULFITE ANHYD GRAN
Sodium sulfite test solution(ChP)
SODIUM SULPHITE ANHYDROUS
SODIUM SULPHITE 60-70% MIN
SODIUM SULPHITE ANHYDROU
Sodiumsulfite,anhydrous,98+%(ACS)
sodium sulfite, acs
SODIUMSULFITE,ANHYDROUS,FCC(BULK
SODIUMSULFITE,EXSICCATED,PURIFIED
SODIUMSULFITE,FCC,EP,BP,JP
SODIUMSULFITE,POWDER,REAGENT,ACS
SULPHITES
NATRIUMSULFIT WASSERFREI, MIN. 97 PROZ.
Natriumsulfit8
Sodium sulfite, anhydrous, extra pure, 97%
Sodium sulfite, anhydrous, for analysis ACS, 98+%
Sodium sulfite, anhydrous, for analysis, 98.5%
SODIUM SULFITE REAGENT (ACS)
Sodium sulfite, reagent grade, ACS
Sodium sulfite, extra pure, Ph Eur, BP, E 221
Sodium sulfite anhyd
Sodiumsulphite,98%
SodiuM Sulfite, Anhydrous, NF, FCC, EP, BP, JP
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