Sodium disulfite (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 Basic Chemical Raw Materials. Bulk quantities are available with COA; purity and packaging are subject to batch COA and order confirmation.
| CAS Number | 7681-57-4 |
|---|---|
| Molecular Formula | Na2O5S2 |
| Molecular Weight | 189.90 g/mol |
| Purity | 按批次COA提供(不公开发布) |
| Packaging | 按订单/批次确认(不公开发布) |
| Applications | Basic Chemical Raw Materials |
| Category | Basic Chemical Raw Materials |
Basic Chemical Raw Materials
COA (Certificate of Analysis) is provided with every batch. MSDS/technical data sheets and third-party test reports are available on request. Purity and packaging are subject to batch COA and order confirmation.
Sodium disulfite is a high-value fine compound with CAS registry number 7681-57-4 and molecular formula Na2O5S2 (molecular weight 189.90 g/mol), belonging to the 精细化学品 segment of chemical raw materials.
Fine chemicals are high-value, multi-variety, small-batch products emphasizing purity and specification customization, also covering general chemical raw materials.
Jinan Shenghe Chemical Co., Ltd. supplies Sodium disulfite with stable inventory and provides a Certificate of Analysis (COA) with each batch; custom repacking is available per process requirement.
CAS number: 7681-57-4 — searchable in PubChem for physicochemical, safety and regulatory data.
Its molecular formula Na2O5S2 comprises 2 Na, 5 O, 2 S atoms.
Also known as: Sodium disulfite
Category: 精细化学品
Targeting pharmaceuticals, electronics, flavors and functional materials; produced and repacked to customer specifications.
Typical purity is 按批次COA提供(不公开发布). Packaging is 按订单/批次确认(不公开发布). Storage: sealed, in a cool and dry place. Each batch ships with a COA; MSDS and other technical documents are available on request.
Supplier: Jinan Shenghe Chemical Co., Ltd.. Samples can be arranged on request; lead time depends on stock and order size. Quotes are returned within one business day by email or WhatsApp.
Email: info@591daili.com · Tel/WhatsApp: +86-18553102138
The CAS number of Sodium disulfite 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 Basic Chemical Raw Materials.
Each batch ships with a Certificate of Analysis (COA). MSDS and other technical documents are available on request.
Store sealed in a cool, dry place. Handling and PPE follow the MSDS supplied with the batch; general chemical-handling precautions are recommended.
Samples are available on request. Please contact us at info@591daili.com or via WhatsApp for details.
Email info@591daili.com or reach us on WhatsApp with the product name, CAS number and required quantity; quotes within one business day. Supplier: Jinan Shenghe Chemical Co., Ltd..
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.