Ingredient Dictionary

TAURINE

Taurine is an amino sulfonic acid that is the 2-amino derivative of ethanesulfonic acid.

How much products actually contain

2 products state the amountmedian 0.000001%

under 0.01% 2
0.01–0.1% 0
0.1–1% 0
1% or more 0

Amounts are mostly stated by products named after the ingredient, so they may lean towards token amounts.

Of the products containing it, 80 list it before the 1% line and 106 after it (usually 1% or less).

Products using this ingredient

12 of 184 confirmed · likeliest to carry enough first · See all 184

Definition

Taurine is an amino sulfonic acid that is the 2-amino derivative of ethanesulfonic acid. It is a naturally occurring amino acid derived from methionine and cysteine metabolism. An abundant component of fish- and meat-based foods, it has been used as an oral supplement in the treatment of disorders such as cystic fibrosis and hypertension. It has a role as an antioxidant, a nutrient, a radical scavenger, a glycine receptor agonist, a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is a conjugate acid of a 2-aminoethanesulfonate. It is a tautomer of a taurine zwitterion.

Source: PubChem

US FDA substance register · UNII 1EQV5MLY3D · registered name TAURINE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Keeps pH steadyBUFFERING

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

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

Official labels & definitions

JCIA labelling name タウリン: 本品は、次の化学式で表されるアミノスルホン酸化合物である。

Source: JCIA labelling names (Japan)

Names & identifiers

TAURINEINCI타우린Korean label name (MFDS standard)Ethanesulfonic acid, 2-amino-SynonymタウリンJapanese labelling name

CAS No.chemical registry number: 107-35-7
EC No.EU chemical inventory number: 203-483-8
DTXSIDUS EPA chemical ID: DTXSID3021304
DTXCIDUS EPA compound ID: DTXCID301304

IUPAC: 2-Aminoethane-1-sulfonic acid
Molecular formula: C2H7NO3S
Molecular weight: 125.14 g/mol

Measured properties

Appearance: Large white crystals or white powder. · Dry Powder
Odour: Odorless · Almost odorless
Boiling point: It decomposes before reaching boiling point (325ºC)
Melting point: 572 °F (decomposes) (NTP, 1992) · 300 °C
Solubility: 50 to 100 mg/mL at 74.3 °F (NTP, 1992) · 65 g/L in cold water
Density: Density = 1.7 g/cu cm · Bulk density = 0.65-0.75 g/cu cm
Stability: Taurine (three batches, stored in polyethylene sealed bags) was demonstrated to have a shelf-life of 36 months at 25 geg C. Shelf-life was measured under accelerated conditions at 40 °C and no loss was observed for six months (three batches). · Stable under recommended storage conditions.
pH: pH = 4.1-5.6 (5% aqueous solution)
Dissociation constant: 1.5
Colour: colourless
Melting/freezing point: 328 ℃
Flash point: 300 ℃
Vapour pressure: 0.000172 ㎜Hg (at 25℃)
Water solubility: 80700 ㎎/ℓ
n-Octanol/water partition coefficient (Kow): -.3.36 ()
Molecular weight: 125.16

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: PubChem · KOSHA safety data sheets (Korea)

What products actually use it for

What the 12 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.

Flavouring and nutrient7
pH regulating agent2
Processing aids not otherwise specified1
Fragrance1
No specific technical function1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 0 eye studies are on record.

Classed as moderate2

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 2 studies

SkinIrr2
Skin Irritation · QSAR Predicted
SkinSens1
Skin Sensitization · QSAR Predicted