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Ingredients

Ingredient Dictionary

BUTYLPARABEN

Butylparaben is an organic molecular entity.

Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 4 list it before the 1% line and 13 after it (usually 1% or less).

Products using this ingredient

12 of 16 confirmed · likeliest to carry enough first · See all 16

Definition

US FDA substance register · UNII 3QPI1U3FV8 · registered name BUTYLPARABEN · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Butylparaben is an organic molecular entity.

Source: PubChem

Butylparaben is the ester of butyl alcohol and p-hydroxybenzoic acid. It conforms to the formula:

Cosmetic roles

Listed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCEStops microbes growing in the productPRESERVATIVE

Safety & regulatory references

Restricted
China · Japan · South Korea
Allowed preservative
United Kingdom

Source: MFDS (Korea) cosmetic regulatory information · EU Cosmetics Regulation · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)

Argentina · Brazil

  • Maximum concentration permitted at final product : (a) 0,14% (expresso como ácido) para a soma das concentrações individuais. (b) 0,8% (expresso como ácido) para a soma das concentrações individuais das substâncias mencionadas nos itens 11 e 11-A contidos no produto; neste caso a soma das concentrações individuais de butil e propilparabeno e seus sais não devem superar 0,14% (expresso como ácido).
  • Other limitations and requirements : Não usar em produtos que não se enxáguem destinados a área de fraldas em crianças menores de 3 anos.
  • Use conditions and warnings that must appear on the label : Em produtos que não se enxáguem desenhados para crianças menores de 3 anos: "Não usar nas áreas das fraldas".

ASEAN

  • Maximum authorised concentration in the finished cosmetic product : 0.4% (as acid) for single ester 0.8% (as acid) for mixtures of esters

Taiwan

  • (a) 0.14%

European Union

  • Maximum concentration in ready for use preparation : - 0,14% (as acid) for the sum of the individual concentrations - 0,8% (as acid) for mixtures of substances mentioned in entry 12 and 12a, here the sum of the individual concentrations of butyl and propylparaben and their salts does not exceed 0,14%
  • Other : Not to be used in leave-on products designed for application on the nappy area of children under three years of age.
  • Wording of conditions of use and warnings : For leave-on products designed for children under three years of age: "Do not use on the nappy area"

Source: MFDS (Korea) cosmetic regulatory information

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

Source: Korea toxic substances GHS register (NIER)

Restriction V/12a · Other restriction: ban substances that deplete the ozone layer · SCCS opinion: Extended Opinion on the Safety Evaluation of Parabens; Opinion concerning Restrictions on Materials listed in annex VI of Directive 76/768/EEC on Cosmetic Products; Opinion on Parabens; Opinion on Parabens updated request for a scientific opinion on 'propyl-and butylparaben'; Opinion on Parabens, underarm cosmetics and breast cancer

Source: EU CosIng ingredient list

Reviewed by CIR: Final Amended Report on the Safety Assessment of Methylparaben, Ethylparaben, Propylparaben, Isopropylparaben, Butylparaben, Isobutylparaben and Benzylparaben as used in cosmetic products

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Final Report on the Safety Assessment of Methylparaben, Ethylparaben, Propylparaben, and Butylparaben

Source: US Cosmetic Ingredient Review (CIR)

Reviewed by CIR: Amended Safety Assessment of Parabens as Used in Cosmetics

Source: US Cosmetic Ingredient Review (CIR)

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

Official labels & definitions

JCIA labelling name ブチルパラベン: 本品は、パラヒドロキシ安息香酸とブタノール(*)のエステルであり、次の化学式で表される。

Source: JCIA labelling names (Japan)

Names & identifiers

BUTYLPARABENINCI부틸파라벤Korean label name (MFDS standard)Benzoic acid, 4-hydroxy-, butyl esterSynonymブチルパラベンJapanese labelling name
CAS No.chemical registry number
94-26-8
EC No.EU chemical inventory number
202-318-7
DTXSIDUS EPA chemical ID
DTXSID3020209
DTXCIDUS EPA compound ID
DTXCID90209
IUPAC
Butyl 4-hydroxybenzoate
Molecular formula
C11H14O3
Molecular weight
194.23 g/mol

Measured properties

Appearance
N-butyl-p-hydroxybenzoate appears as odorless white crystals or crystalline powder. Tasteless, but numbs the tongue. Aqueous solutions slightly acidic to litmus. (NTP, 1992) · Colorless solid, Insoluble in water (207 mg/L at 20 deg C), Very hygroscopic, [HSDB] White odorless solid, Insoluble in water, [CAMEO] Powder, Slightly soluble in water, [MSDSonline]
Odour
Odorless
Boiling point
156.00 to 157.00 °C. @ 3.50 mm Hg · 156-157 °C (3.5 mm Hg)
Melting point
154 to 156 °F (NTP, 1992) · 68.5 °C
Solubility
less than 1 mg/mL at 63 °F (NTP, 1992) · Crystalline powder, solubility in water: approx 1:125 /Butylparaben calcium salt/
Stability
Stable under recommended storage conditions. · Parabens are stable against hydrolysis during autoclaving & resist saponification /Parabens/
Dissociation constant
pKa = 8.47
Colour
colourless
Melting/freezing point
68.8 ℃
Initial boiling point and range
156 ℃
Vapour pressure
0.000186 ㎜Hg (@ 25 ℃, est.)
Water solubility
207 ㎎/ℓ (@ 20 ℃)
Vapour density
6.7
Relative density
1.23
n-Octanol/water partition coefficient (Kow)
3.57
Auto-ignition temperature
(&amp, gt, 495℃)
Molecular weight
194.23

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 24 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.

  • Preservative17
  • Fragrance2
  • Deodorizer2
  • Flavouring and nutrient2
  • Food preservative (EPA)1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

2 skin studies and 1 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 3 studies
  • Category 6.5B (Category 1)
    Skin Sensitization · Read Across
  • Category 6.3B (Category 3)
    Skin Irritation · Read Across
  • Category 6.4A (Category 2A)
    Eye Irritation · Read Across

Source: US EPA CompTox dashboard

Related literature

Linked databases 26