Ingredient Dictionary

PHENYLBENZIMIDAZOLE SULFONIC ACID

Ensulizole is a member of benzimidazoles.

Korean limit: 4%

PHENYLBENZIMIDAZOLE SULFONIC ACID Molecular structure — Molecular structure

How much products actually contain

No product states its amount yet.

Of the products containing it, 38 list it before the 1% line and 0 after it (usually 1% or less).

Products using this ingredient

12 of 38 confirmed · likeliest to carry enough first · See all 38

Definition

Ensulizole is a member of benzimidazoles.

Source: PubChem

US FDA substance register · UNII 9YQ9DI1W42 · registered name ENSULIZOLE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Phenylbenzimidazole Sulfonic Acid is the aromatic organic compound that conforms to the formula:

Cosmetic roles

Absorbs UV (including to protect the product)UV ABSORBERProtects colour and scent from lightLIGHT STABILIZERFilters UV to protect skin (sunscreen active)UV FILTER

Safety & regulatory references

Restricted: China
Allowed UV filter: United Kingdom

Source: MFDS (Korea) cosmetic regulatory information · ASEAN Cosmetic Directive · EU Cosmetics Regulation · Japan Standards for Cosmetics · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)

Argentina · Brazil

Maximum concentration permitted at final product : 8% (expresado como ácido)

ASEAN

Maximum authorised concentration in the finished cosmetic product : 8% expressed as acid

Canada

Maximum Concentration Permitted : ≤ 4%

Taiwan

United States

Specific Limitations and Comments : Use of the term "sunscreen" or similar sun protection wording in a product's labeling generally causes the product to be subject to regulation as a drug or a drug/cosmetic, depending on the claims. However, sunscreen ingredients may also be used in some cosmetic products to protect the products’ color. The labelling must also state why the sunscreen ingredient is used, for example, "Contains a sunscreen to protect product color." If this explanation isn’t present, the product may be subject to regulation as a drug (21 CFR 700.35). For more information on sunscreens, refer to Tanning Products

Japan

Maximum amount per 100 g (Cosmetics not used for mucosa and to be washed away) : 3.0 g
Maximum amount per 100 g (Cosmetics not used for mucosa and not to be washed away) : 3.0 g

South Korea

Maximum concentration : 4%

European Union

Maximum concentration in ready for use preparation : 8%(as acid)

Source: MFDS (Korea) cosmetic regulatory information

EU Cosmetics Regulation, Annex VI (allowed UV filters), entry 6 · maximum concentration 8%(as acid)

Source: EU allowed UV filters (Annex VI)

Restriction VI/6

Source: EU CosIng ingredient list

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

Official labels & definitions

JCIA labelling name フェニルベンズイミダゾールスルホン酸: 本品は、次の化学式で表される芳香族化合物である。

Source: JCIA labelling names (Japan)

Names & identifiers

PHENYLBENZIMIDAZOLE SULFONIC ACIDINCI페닐벤즈이미다졸설포닉애씨드Korean label name (MFDS standard)1H-Benzimidazole-5-sulfonic acid, 2-phenyl-Synonymフェニルベンズイミダゾールスルホン酸Japanese labelling name

CAS No.chemical registry number: 27503-81-7
EC No.EU chemical inventory number: 248-502-0
DTXSIDUS EPA chemical ID: DTXSID3038852
DTXCIDUS EPA compound ID: DTXCID1018852

IUPAC: 2-Phenyl-1H-1,3-benzimidazole-5-sulfonic acid
Molecular formula: C13H10N2O3S
Molecular weight: 274.29 g/mol

Measured properties

Melting point: >300, decomposes at 410
Solubility: Soluble
Colour: white
Melting/freezing point: 300 ℃
Initial boiling point and range: 566.08 ℃
Vapour pressure: 0.00000000000000732 ㎜Hg
Water solubility: 23630 ㎎/ℓ
Relative density: 1.497
n-Octanol/water partition coefficient (Kow): -0.16 (est.)
Molecular weight: 274.3

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.

UV stabilizer11
Fragrance1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

6 skin studies and 1 eye studies are on record.

Classed as low9

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 7 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) adopted 1981 according to
Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation) according to EU Method B.6 (Skin Sensitisation)
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
SkinSens1
Skin Sensitization · QSAR Predicted
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to