Sodium metabisulfite (CAS No. 7681-57-4) is supplied by Jinan Shenghe Chemical Co., Ltd. with a typical purity of 按批次COA提供(不公开发布). Main applications include Food Additives；Bleaching Agents；Basic Chemical Raw Materials. Bulk quantities are available with COA; purity and packaging are subject to batch COA and order confirmation.
Food Additives；Bleaching Agents；Basic Chemical Raw Materials
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The CAS number of Sodium metabisulfite is 7681-57-4.
Typical purity is 按批次COA提供(不公开发布), supplied in 按订单/批次确认(不公开发布), with COA provided.
Main applications include Food Additives；Bleaching Agents；Basic Chemical Raw Materials.
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Sodium Metabisulphite Food Grade · CAS 7681-57-4 · Na2S2O5. UNII 4VON5FNS3C. Solubility: 54 % (NIOSH, 2024); Solubility: 66.7 g/100 g water at 25 °C; Solubility: 54%.
| CAS Registry Number | 7681-57-4 |
|---|---|
| PubChem CID | 656671 |
| Molecular formula | Na2S2O5 |
| UNII (FDA) | 4VON5FNS3C |
| Molecular Weight | 190.11 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 0 |
| Exact Mass | 189.89825401 |
| Monoisotopic Mass | 189.89825401 |
| Topological Polar Surface Area | 125 |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Complexity | 136 |
| Solubility | 54 % (NIOSH, 2024) |
|---|---|
| Solubility | 66.7 g/100 g water at 25 °C |
| Solubility | 54% |
| Density | 2.36 g/cm³ |
| Density | 1.4 |
| Density | 1.4 @25 °C |
| LogP | -3.7 |
| Decomposition | 150 °C |
| pH | 4,0-5,5 (10 % aqueous solution) |
| Regulatory & Food Contact | FDA Substance added to food: ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER, ANTIOXIDANT; FLOUR_TREATMENT_AGENT; PRESERVATIVE: Food Additives ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER, FLOUR TREATING AGENT, FREEZIN JECFA ADI: 0-0.7 mg/kg bw TRS 891-JECFA 51/30 FAS 42-JECFA 51/95 |
|---|---|
| GHS notification summary | 0.4% (11 / 3060) |
| GHS notification summary | 0.4% (11 / 3060) |
|---|---|
| Reported hazard statements | H302, H318, H317, H334, H335, H402, H412, H320 |
H302: Harmful if swallowed [Warning Acute toxicity, oral]
H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
Sodium metabisulfite; 7681-57-4; Sodium pyrosulfite; Sodium disulfite; Disodium pyrosulfite; Natrii disulfis; Campden Tablets; Disodium metabisulfite; Natrium pyrosulfit; Natriummetabisulfit; sodium pyrosulphite; Sodium bisulfite anhydrous; Natrium metabisulfurosum; Sodium pyrosulfite (Na2S2O5); Disodium pentaoxodisulfate; 4VON5FNS3C
CAS 7681-57-4; molecular formula Na2S2O5; molecular weight — g/mol.
Sodium metabisulfite, 7681-57-4, Sodium pyrosulfite, Sodium disulfite, Disodium pyrosulfite, Natrii disulfis.
Documented regulatory listings: FDA Substance added to food: ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER,; ANTIOXIDANT; FLOUR_TREATMENT_AGENT; PRESERVATIVE: Food Additives; ANTIMICROBIAL AGENT, ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER, FLOUR TREATING AGENT, FREEZIN.
0.4% of GHS notifications report no hazard classification (11 of 3060).
Solubility: 54 % (NIOSH, 2024); Solubility: 66.7 g/100 g water at 25 °C; Solubility: 54%; Density: 2.36 g/cm³.
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.