Safety data sheet for Sodium metabisulfite
CAS 7681-57-4
This is the free preview of a draft SDS for Sodium metabisulfite — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Food and wine preservative, brewing.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 7681-57-4
- Molecular formula
- Na2O5S2
- Molecular weight
- 190.11 g/mol
- Signal word
- Danger
Hazard classification
- GHS05 — Corrosive
- GHS07 — Health hazard — irritant
- H302: Harmful if swallowed.
- H318: Causes serious eye damage.
Section 1 — Identification
1.1 Product identifier
Product identifier: Sodium Pyrosulfite
CAS number: 7681-57-4
EC number: 231-673-0
REACH registration number: Not required for substances manufactured/imported <1 tonne/year; otherwise confirm the active registrant number before external issue.
PubChem CID reference: 656671
Synonyms: Sodium metabisulfite; Sodium pyrosulfite; Sodium disulfite; Disodium pyrosulfite; Natrii disulfis; Campden Tablets; Disodium metabisulfite; Natrium pyrosulfit; Natriummetabisulfit; sodium pyrosulphite
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses: Laboratory reagent, industrial processing aid, formulation component, and internal product-stewardship review subject to supplier confirmation.
Uses advised against: Consumer, medical, food, or any other use not covered by the supplier's label, technical instructions, or exposure scenario.
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification: Acute Toxicity, Category 4 — Oral (Acute Tox. 4 (Oral)) [H302]
Classification: Serious Eye Damage, Category 1 (Eye Dam. 1) [H318]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS05 (Corrosion), GHS07 (Exclamation)
Hazard statement: H302: Harmful if swallowed.
Hazard statement: H318: Causes serious eye damage.
Precautionary statement: P264+P265: Wash hands thoroughly after handling. Do not touch eyes.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P270: Do not eat, drink or smoke when using this product.
Precautionary statement: P305+P354+P338: IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
Precautionary statement: P301+P317: IF SWALLOWED: Get medical help.
Precautionary statement: P330: Rinse mouth.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Solid
Appearance: White hexagonal crystals or powder
Odor: In the presences of traces of water, it develops an odor of sulfur dioxide
Boiling point: Not available
Melting point: 150°C (302°F)
Flash point: Not available
Density: Specific gravity: 1.4 at 25 °C/4 °C
Vapor pressure: Not available
Water solubility: Solubility in water, g/100ml at 20 °C: 65 (good)
Log Pow (log Kow): -3.7
Vapor density: Not available
Lower explosive limit: Not available
Upper explosive limit: Not available
Auto-ignition temperature: Not available
Viscosity: Not available
pH: Not available
9.2 Other information
Other information: Additional classification-supporting physical hazard data should be confirmed from the customer-specific product specification where required.
Sources
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
- PubChem — transport information
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Sodium metabisulfite, and where each one comes from
13 measured values for 4 properties, read from 4 public databases. On 1 property the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Melting point
3 records agree
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- >302 °F (decomposes)
- Hazardous Substances Data Bank (HSDB)
- >302 °F (Decomposes)
- NIOSH Pocket Guide
- >302 °F (decomposes)
- OSHA Occupational Chemical Database
Density
4 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- Specific gravity: 1.4 at 25 °C/4 °C
- Hazardous Substances Data Bank (HSDB)
Solubility
5 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- Freely soluble in water, glycerol; slightly soluble in alcohol
- Hazardous Substances Data Bank (HSDB)
- Soluble in ethanol
- Hazardous Substances Data Bank (HSDB)
- 66.7 g/100 g water at 25 °C
- Hazardous Substances Data Bank (HSDB)
- Very soluble in sodium bisulfite
- Hazardous Substances Data Bank (HSDB)
Odour
1 record
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- In the presences of traces of water, it develops an odor of sulfur dioxide
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Sodium metabisulfite, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Sodium metabisulfite
The draft covers all 16 sections under OSHA 29 CFR 1910.1200 and GHS Rev. 7, or the CLP EC 1272/2008 layout for the EU. Each draft arrives as an editable .docx and a PDF with an appendix naming the source of each value, in about 60 seconds. $5 per document, no account.