Chemical Safety Data Sheet MSDS / SDS
Sodium bisulfite
Revision Date:2026-03-21Revision Number:1
Product identifier
- Product name: Sodium bisulfite
- CBnumber: CB5854257
- CAS: 7631-90-5
- EINECS Number: 231-548-0
- Synonyms: SODIUM METABISULPHITE;NAHSO3
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 010-86108875
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordWarning
P501 Dispose of contents/container to..…
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P270 Do not eat, drink or smoke when using this product.
P264 Wash skin thouroughly after handling.
Hazard statements
H302 Harmful if swallowed
Substance
- Product name: Sodium bisulfite
- Synonyms: SODIUM METABISULPHITE;NAHSO3
- CAS: 7631-90-5
- EC number: 231-548-0
- MF: HNaO3S
- MW: 104.06
General advice
Show this safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air.
In case of skin contact
In case of skin contact: Take off immediately all con- taminated clothing. Rinse skin with water/ shower.
In case of eye contact
After eye contact: rinse out with plenty of water. Remove contact lenses.
If swallowed
After swallowing: make victim drink water (two glasses at most). Consult doctor if feeling unwell.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
Protection of first-aiders
For personal protection see section 8.
Notes to physician
No data available
Suitable extinguishing media
Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
Unsuitable extinguishing media
For this substance/mixture no limitations of extinguishing agents are given.
Specific hazards during fire fighting
Not combustible. Ambient fire may liberate hazardous vapours.
Hazardous combustion products Hazardous combustion products
Sodium oxides Sulphur oxides Sulphur oxides Sodium oxides
Specific extinguishing methods
Suppress (knock down) gases/vapours/mists with a water spray jet. Prevent fire extinguishing water from contaminating surface water or the ground water system.
Special protective equipment for fire-fighters
In the event of fire, wear self-contained breathing apparatus.
NFPA 704
2
0
2
| HEALTH | 2 | Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine) | |
| FIRE | 0 | Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride) | |
| REACT | 2 | Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water (e.g. white phosphorus, potassium, sodium) | |
| SPEC. HAZ. |
Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Do not breathe vapours, aerosols. Avoid substance contact. Ensure adequate ventilation. Evacuate the danger area, observe emergency procedures, consult an expert. Advice for emergency responders: For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up with liquid-absorbent and neutralising material (e.g. Chemizorb® H⁺, Merck Art. No. 101595). Dispose of properly. Clean up affected area.
Handling
Avoidance of contactStrong acids and oxidizing agents Metals
Storage
Conditions for safe storageNo metal containers.
Further information on storage conditions
Tightly closed.
Materials to avoid
Do not store near acids.
Storage class
12, Non Combustible Liquids
Recommended storage temperature
Recommended storage temperature see product label.
control parameter
Hazard composition and occupational exposure limitsDoes not contain substances with occupational exposure limits.
Engineering measures
No data available
Personal protective equipment
Respiratory protectionrequired when vapours/aerosols are generated.
Recommended Filter type
Filter type ABEK
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Eye/face protection
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Safety glasses
Skin and body protection
Safety glasses
protective clothing
Hand protection
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Full contact
Manufacturer
(KCL 740 / Aldrich Z677272, Size M)
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Splash contact
Manufacturer
(KCL 740 / Aldrich Z677272, Size M)
Manufacturer
data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail sales@kcl.de, test method: EN374
Remarks
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.
The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.
If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario.
Hygiene measures
The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.
If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario.
Change contaminated clothing. Wash hands after working with substance.
Information on basic physicochemical properties
- Solubility300 g/L
- Physical statePowder/Solid
- Self-ignitionNot applicable
- Burning rateNo data available
- Flammability (liquids)The product is not flammable.
- Flammability (solid, gas)No data available
- Evaporation rateNo data available
- Flash pointNot applicable
- Boiling point/boiling rangeNo data available
- Melting point/ rangeNo data available
- pHca. 4.1
Concentration: 42 g/l - Odor ThresholdNo data available
- OdorSlight odor of sulfur dioxide
- Colorlight yellow
- Appearanceliquid
- Metal corrosion rateMay be corrosive to metals.
- Particle characteristics Particle sizeNo data available
- Molecular weight104.06 g/mol
- Oxidizing propertiesnone
- Explosive propertiesNot classified as explosive.
- Flow timeNo data available
- Viscosity, kinematicNo data available
- Viscosity, dynamicNo data available
- Decomposition temperatureNo data available
- Autoignition temperatureNot applicable
- Partition coefficient: n-octanol/waterNo data available
- Water solubilitysoluble (20 °C)
- Density1.48
- Relative density1.48
- Relative vapor densityNo data available
- Vapor pressure40 hPa ( 20 °C)
- Lower explosion limit / Lower flammability limitNot applicable
- Upper explosion limit / Upper flammability limitNot applicable
Reactivity
No data available
Chemical stability
The product is chemically stable under standard ambient conditions (room temperature) .
Possibility of hazardous reactions
Generates dangerous gases or fumes in contact with: Acids
Conditions to avoid
no information available
Incompatible materials
Strong acids and oxidizing agents Metals
Hazardous decomposition products
In the event of fire: see section 5
11.1 Information on toxicological effects
Mixture Acute toxicityOral: No data available
Acute toxicity estimate Oral - 3,850 mg/kg (Calculation method)
Inhalation: No data available
Dermal: No data available
Skin corrosion/irritation
Acute toxicity estimate Oral - 3,850 mg/kg (Calculation method)
Inhalation: No data available
Dermal: No data available
Classified based on available data. For more details, see section 2
Serious eye damage/eye irritation
Classified based on available data. For more details, see section 2
Respiratory or skin sensitization
Classified based on available data. For more details, see section 2
Germ cell mutagenicity
Classified based on available data. For more details, see section 2
Carcinogenicity
Classified based on available data. For more details, see section 2
Reproductive toxicity
Classified based on available data. For more details, see section 2
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
11.2 Additional Information
May cause irritation to eyes and respitatory passages to workers briefly exposed to high concentrations
Hazardous properties cannot be excluded but are unlikely when the product is handled appropriately.
Components sodium hydrogensulphite
Hazardous properties cannot be excluded but are unlikely when the product is handled appropriately.
Acute toxicity
LD50 Oral - Rat - male and female - 1,540 mg/kg (OECD Test Guideline 401)
LC50 Inhalation - Rat - male and female - 4 h - > 5.5 mg/l - dust/mist (OECD Test Guideline 403)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
LC50 Inhalation - Rat - male and female - 4 h - > 5.5 mg/l - dust/mist (OECD Test Guideline 403)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
Skin corrosion/irritation
Skin - Rabbit
Result: No skin irritation (OECD Test Guideline 404)
Remarks: (in analogy to similar products)
Result: No skin irritation (OECD Test Guideline 404)
Remarks: (in analogy to similar products)
Serious eye damage/eye irritation
Eyes - In vitro study
Result: negative (OECD Test Guideline 491)
Result: negative (OECD Test Guideline 491)
Respiratory or skin sensitization
Local lymph node assay (LLNA) - Mouse
Result: negative (OECD Test Guideline 429)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
Result: negative (OECD Test Guideline 429)
Remarks: (ECHA)
The value is given in analogy to the following substances: sodium sulphite
Germ cell mutagenicity
Species: Rat - male
Result: negative
Remarks: (ECHA)
Result: negative
Remarks: (ECHA)
Carcinogenicity
Carcinogenicity classification not possible from current data.
Reproductive toxicity
Weight of evidence does not support classification for reproductive toxicity
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure Aspiration hazard
Classified based on available data. For more details, see section 2
Ecotoxicity
Components:
sodium hydrogensulphite:
Toxicity to fishLC50 (Leuciscus idus (Golden orfe)): > 215 - < 464 mg/l End point: mortality Exposure time: 96 h Test Type: static test Remarks: The value is given in analogy to the following substances: (ECHA) The value is given in analogy to the following substances: potassium sulfite
Toxicity to daphnia and other aquatic invertebrates
EC50 (Daphnia magna (Water flea)): 89 mg/l Exposure time: 48 h Test Type: static test Remarks: The value is given in analogy to the following substances: (ECHA) The value is given in analogy to the following substances: sodium metabisulphite
Toxicity to algae/aquatic plants
ErC50 (Desmodesmus subspicatus (green algae)): 43.8 mg/l Exposure time: 72 h Test Type: static test Method: OECD Test Guideline 201 Remarks: The value is given in analogy to the following substances: (ECHA) The value is given in analogy to the following substances: sodium metabisulphite
Toxicity to fish (Chronic toxicity)
NOEC (Danio rerio (zebra fish)): >= 316 mg/l Exposure time: 34 d Test Type: flow-through test Method: OECD Test Guideline 210 GLP: yes
Toxicity to daphnia and other aquatic invertebrates (Chronic toxicity)
NOEC (Daphnia magna (Water flea)): > 10 mg/l End point: reproduction rate Exposure time: 21 d Test Type: semi-static test Method: OECD Test Guideline 211 GLP: yes
Toxicity to microorgan- isms
EC50 (activated sludge): > 1,000 mg/l Exposure time: 3 h Test Type: static test Method: OECD Test Guideline 209 GLP: yes Remarks: The value is given in analogy to the following substances: (ECHA) The value is given in analogy to the following substances: sodium sulphite
Ecotoxicology Assessment
Chronic aquatic toxicityThis product has no known ecotoxicological effects.
Persistence and degradability
Components:
sodium hydrogensulphite:
BiodegradabilityRemarks: Not applicable for inorganic substances
Bioaccumulative potential
Components:
sodium hydrogensulphite:
Partition coefficient: noctanol/waterRemarks: Not applicable for inorganic substances
Mobility in soil
No data available
Other adverse effects
No data available
Disposal methods
Waste from residuesOffer surplus and non-recyclable solutions to a licensed disposal company.
International Regulations
IATA-DGR
UN/ID No. : UN 2693
Proper shipping name : Bisulphites, aqueous solution, n.o.s.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : Class 8 - Corrosive substances
Packing instruction (cargo aircraft) : 856
Packing instruction (passenger aircraft) : 852
Proper shipping name : Bisulphites, aqueous solution, n.o.s.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : Class 8 - Corrosive substances
Packing instruction (cargo aircraft) : 856
Packing instruction (passenger aircraft) : 852
IMDG-Code
UN number : UN 2693
Proper shipping name : BISULPHITES, AQUEOUS SOLUTION, N.O.S.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : 8
EmS Code : F-A, S-B
Marine pollutant : no
Proper shipping name : BISULPHITES, AQUEOUS SOLUTION, N.O.S.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : 8
EmS Code : F-A, S-B
Marine pollutant : no
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
National Regulations
JT/T 617
UN number : UN 2693
Proper shipping name : BISULPHITES, AQUEOUS SOLUTION, N.O.S.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : 8
Environmentally hazardous : no
Proper shipping name : BISULPHITES, AQUEOUS SOLUTION, N.O.S.
(sodium hydrogensulphite)
Class : 8
Packing group : III
Labels : 8
Environmentally hazardous : no
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely based upon the properties of the unpackaged material as it is described within this Safety Data Sheet. Transportation classifications may vary by mode of transportation, package sizes, and variations in regional or country regulations.
Catalogue of Hazardous Chemicals : This product is not listed in the catalogue of hazardous chemicals, but it meets the definition of hazardous chemicals and its principles of determination.
National regulatory information
Law on the Prevention and Control of Occupational Diseases
Regulations on Safety Management of Hazardous Chemicals
Identification of Major Hazard Installations for Hazardous Chemicals (GB 18218)
Not listed
Hazardous Chemicals for Priority Management
Not listed under SAWS
Catalogue of Specially Controlled Hazardous
Not listed Chemicals
List of Explosive Precursors
Not listed
Regulations on Labour Protection in Workplaces where Toxic Substances are Used
Catalogue of Highly Toxic Chemicals
Not listed
Regulation of Environmental Management on the First Import of Chemicals and the Import and Export of Toxic Chemicals
China Severely Restricted Toxic Chemicals for Import and Export
Not listed
Regulation on the Administration of Precursor Chemicals
Catalogue and Classification of Precursor Chemicals
Not listed
Regulations on the Administration of Controlled Chemicals
List of Controlled Chemicals
Not listed
Regulations of Ozone Depleting Substances Management
List of Controlled Ozone Depleting Substances
Not listed
List of Controlled Ozone Depleting Substances Import and Export
Not listed
Environmental Protection Law
List of Priority Controlled Chemicals
Not listed
List of Key Controlled New Pollutants
Not listed
Full text of other abbreviations
ACGIHUSA. ACGIH Threshold Limit Values (TLV)
ACGIH / TWA AIIC - Australian Invent Transport by Land of Bra bw - Body weight; CMR Standard of the German List (Canada); ECx - Conc associated with x% respo Chemical Substances (Jap response; ERG - Emerge GLP - Good Laboratory P cer; IATA - International Construction and Equipm Half maximal inhibitory c tion; IECSC - Inventory o tional Maritime Dangerou Industrial Safety and H Standardisation; KECI - K tration to 50 % of a test (Median Lethal Dose); MA lution from Ships; MERC of Dangerous Goods; n.o. - No Observed (Adverse) fect Level; NOELR - No Norm; NTP - National Toxi icals; OECD - Organisatio fice of Chemical Safety a and Toxic substance; PIC stances; (Q)SAR - (Quant (EC) No 1907/2006 of th Registration, Evaluation, Accelerating Decompositi Chemical Substance Inve Thailand Existing Chemica States); UN - United Nat Transport of Dangerous WHMIS - Workplace Hazar
8-hour, time-weighted average ry of Industrial Chemicals
ANTT - National Agency for il
ASTM - American Society for the Testing of Materials
- Carcinogen, Mutagen or Reproductive Toxicant
DIN nstitute for Standardisation
DSL - Domestic Substances ntration associated with x% response
ELx - Loading rate se
EmS - Emergency Schedule
ENCS - Existing and New n)
ErCx - Concentration associated with x% growth rate cy Response Guide
GHS - Globally Harmonised System
actice
IARC - International Agency for Research on Canir Transport Association
IBC - International Code for the nt of Ships carrying Dangerous Chemicals in Bulk
IC50 ncentration
ICAO - International Civil Aviation Organiza- Existing Chemical Substances in China
IMDG - Interna- Goods
IMO - International Maritime Organisation
ISHL alth Law (Japan)
ISO - International Organisation for rea Existing Chemicals Inventory
LC50 - Lethal Concenopulation
LD50 - Lethal Dose to 50% of a test population POL - International Convention for the Prevention of Pol- SUR - The Agreement for the Facilitation of the Transport . - Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC ffect Concentration
NO(A)EL - No Observed (Adverse) Efbservable Effect Loading Rate
NOM - Official Mexican ology Program
NZIoC - New Zealand Inventory of Chemfor Economic Co-operation and Development
OPPTS - Ofd Pollution Prevention
PBT - Persistent, Bioaccumulative S - Philippines Inventory of Chemicals and Chemical Subtative) Structure Activity Relationship
REACH - Regulation European Parliament and of the Council concerning the uthorisation and Restriction of Chemicals
SADT - Selfn Temperature
SDS - Safety Data Sheet
TCSI - Taiwan tory
TDG - Transportation of Dangerous Goods
TECI s Inventory
TSCA - Toxic Substances Control Act (United ons
UNRTDG - United Nations Recommendations on the oods
vPvB - Very Persistent and Very Bioaccumulative
ous Materials Information System
ANTT - National Agency for il
ASTM - American Society for the Testing of Materials
- Carcinogen, Mutagen or Reproductive Toxicant
DIN nstitute for Standardisation
DSL - Domestic Substances ntration associated with x% response
ELx - Loading rate se
EmS - Emergency Schedule
ENCS - Existing and New n)
ErCx - Concentration associated with x% growth rate cy Response Guide
GHS - Globally Harmonised System
actice
IARC - International Agency for Research on Canir Transport Association
IBC - International Code for the nt of Ships carrying Dangerous Chemicals in Bulk
IC50 ncentration
ICAO - International Civil Aviation Organiza- Existing Chemical Substances in China
IMDG - Interna- Goods
IMO - International Maritime Organisation
ISHL alth Law (Japan)
ISO - International Organisation for rea Existing Chemicals Inventory
LC50 - Lethal Concenopulation
LD50 - Lethal Dose to 50% of a test population POL - International Convention for the Prevention of Pol- SUR - The Agreement for the Facilitation of the Transport . - Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC ffect Concentration
NO(A)EL - No Observed (Adverse) Efbservable Effect Loading Rate
NOM - Official Mexican ology Program
NZIoC - New Zealand Inventory of Chemfor Economic Co-operation and Development
OPPTS - Ofd Pollution Prevention
PBT - Persistent, Bioaccumulative S - Philippines Inventory of Chemicals and Chemical Subtative) Structure Activity Relationship
REACH - Regulation European Parliament and of the Council concerning the uthorisation and Restriction of Chemicals
SADT - Selfn Temperature
SDS - Safety Data Sheet
TCSI - Taiwan tory
TDG - Transportation of Dangerous Goods
TECI s Inventory
TSCA - Toxic Substances Control Act (United ons
UNRTDG - United Nations Recommendations on the oods
vPvB - Very Persistent and Very Bioaccumulative
ous Materials Information System
Disclaimer:
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.