Ingredient Dictionary

SODIUM BISULFITE

Sodium hydrogensulfite is an inorganic sodium salt having hydrogensulfite as the counterion.

How much products actually contain

No product states its amount yet.

Of the products containing it, 6 list it before the 1% line and 21 after it (usually 1% or less).

Products using this ingredient

12 of 27 confirmed · likeliest to carry enough first · See all 27

Definition

Sodium hydrogensulfite is an inorganic sodium salt having hydrogensulfite as the counterion. It has a role as a mutagen, an allergen, a reducing agent, a food antioxidant and a food colour retention agent. It is an inorganic sodium salt and a sulfite salt. It contains a hydrogensulfite.

Source: PubChem

US FDA substance register · UNII TZX5469Z6I · registered name Sodium bisulfite · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Sodium Bisulfite is the inorganic salt that conforms to the formula:

Cosmetic roles

Stops microbes growing in the productPRESERVATIVESlows spoilage by oxygenANTIOXIDANTReduces other ingredientsREDUCINGCurls or straightens hairHAIR WAVING OR STRAIGHTENING

Safety & regulatory references

Restricted: China · South Korea · Taiwan

Source: MFDS (Korea) cosmetic regulatory information

Argentina · Brazil

Field of application and/or use : (a) an oxidizer in hair dyes (b) straighteners hair products (c) facial sunless d) Other self-tanning
Maximum concentration permitted at final product : (a) 0,67% expressed as SO 2free (b) 6.7% expressed as SO 2 free (c) 0.45% expressed as SO 2free d) 0,40% expressed as SO 2free

ASEAN

Field of application and/or use : (a) Oxidative hair dye products (b) Hair straightening products (c) Self- tanning products for the face (d) Other self- tanning products
Maximum authorised concentration in the finished cosmetic product : (a) 0.67 % expressed as free SO2 (b) 6.7 % expressed as free SO2 (c) 0.45 % expressed as free SO2 (d) 0.40 % expressed as free SO2
Other limitations and requirements : For purposes other than inhibiting the development of microorganisms in the product. This purpose has to be apparent from the presentation of the product As a preservative, see Annexe VI, Part 1, No 9

European Union

Product Type, body parts : (a) Oxidative hair dye products (b) Hair straightening products (c) Self-tanning products for the face (d) Other self-tanning products
Maximum concentration in ready for use preparation : (a) 0.67% (as free SO2) (b) 6.7% (as free SO2) (c) 0.45% (as free SO2) (d) 0.40% (as free SO2)
Other : For purposes other than inhibiting the development of micro-organisms in the product. This purpose has to be apparent from the presentation of the product
Maximum concentration in ready for use preparation : 0.2% (as free SO2)

Source: MFDS (Korea) cosmetic regulatory information

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

Restriction III/99 V/9

Source: EU CosIng ingredient list

Reviewed by CIR: Sulfites

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Report on the Safety Assessment of Sodium Sulfite, Potassium Sulfite, Ammonium Sulfite, Sodium Bisulfite, Ammonium Bisulfite, Sodium Metabisulfite, and Potassium Metabisulfite

Source: US Cosmetic Ingredient Review (CIR)

More data — names, identifiers, properties, test records, literature

Official labels & definitions

JCIA labelling name 亜硫酸水素Ｎａ: 本品は、亜硫酸の一ナトリウム塩であり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

SODIUM BISULFITEINCI소듐바이설파이트Korean label name (MFDS standard)Sulfurous acid, monosodium saltSynonym亜硫酸水素ＮａJapanese labelling name

CAS No.chemical registry number: 7631-90-5
EC No.EU chemical inventory number: 231-548-0
DTXSIDUS EPA chemical ID: DTXSID8034902
DTXCIDUS EPA compound ID: DTXCID6014902

IUPAC: Sodium hydrogen sulfite
Molecular formula: HNaO3S
Molecular weight: 104.05 g/mol

Measured properties

Colour: white
Melting/freezing point: &amp, lt, ℉
Initial boiling point and range: &amp, gt, 212 ℉ (760 ㎜Hg)
Relative density: 1.48
Molecular weight: 104.062

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 71 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Processing aids not otherwise specified20
Thickening agent9
Preservative5
Reducing agent4
Surfactant (surface active agent)3
Corrosion inhibitor3
Antioxidant3
pH regulating agent2

19 other uses

Intermediate2
Stabilizing agent2
Cleaning agent2
Dye1
Fixing agent (mordant)1
Solids separation (precipitating) agent, not other1
Chemical reaction regulator1
Hair waving or straightening (EPA)1
Polymerization promoter1
Soil amendments1
Oxidizing agent1
Biocide1
Tanning agents not otherwise specified1
Food preservative (EPA)1
Surface modifier1
Filler1
Flavouring and nutrient1
Bleaching agent1
Plasticizer1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

5 skin studies and 3 eye studies are on record.

Classed as low1

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 8 studies

Classification not possible
Skin Sensitization · Screening
Category 6.3A (Category 2)
Skin Irritation · Read Across
Category 6.5B (Category 1)
Skin Sensitization · Read Across
Classification not possible
Skin Irritation · Screening
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) 2002-04-24 equivalent or similar to
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Category 2B
Eye Irritation · Screening
Eye damage - category 1
Eye Irritation · Screening