Food use
Food-use source coverage is present in the current record.
The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.
- beauty
- cleaning
- industrial
- pharma
CI 20470
CAS 1064-48-8 · 70/100 · High conf.
Also registered as 5 other CAS numbers
12042-02-3 · 31258-44-3 · 68417-62-9 · 84842-81-9 · 86923-11-7
Concern score
70/100High concern based on regulatory listings.
High confidence
CI 20470 in plain language
On cosmetic ingredient lists it appears as “Acid black 1”.
Also known as Acid black 1 · Naphthol blue black · C.I. Acid Black 1, disodium salt · KURO401 · Amido black · C.I. 20470
Show all 13 names
C.I. acid black 1 · D&C black no. 1 (delisted) · Acid Black H · D And C Black Number 1 · D and C Black No. 1 · D&C Black 1 · c.i. acid black
Used in cosmetics as a colourant. Acid Black 1 is classed chemically as a disazo color.
- Colorant
- Colourant
- High concern: no hazard classifications on record. It is restricted in EU cosmetics.
Why it's flagged
4-Amino-5-hydroxy-3-(4-nitrophenylazo)-6- (phenylazo)-2,7- naphthalenedisulfonic acid, disodium salt is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — restricted
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Regulation
Restrictions first, then routine listings from published regulatory sources.
- EU Annex III — restricted
- EU Annex IV — permitted colorant
- EU permitted colorant
- EU restricted in cosmetics
- Inactive ingredient in US drugs
- Found in consumer products
- Cleaning
- Industrial
- View source →restricted
EUEC
Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: Hair dye substance in non-oxidative hair dye products Maximum concentration: 0,5 %
EUCosIngActive4 entries
- Cosmetics Regulation annex III / ref 295.Source →
- Acid Black 1 is classed chemically as a disazo color. It conforms to the formula. To identify the colorant allowed for use in the European Union (EU), the INCI Name CI 20470 must be used, except for hair dye products. Restriction: IV/46Source →
- CI 20470 is classed chemically as a disazo colour. It conforms to the formula: Restriction: IV/46Source →
- Cosmetics Regulation annex IV / ref 46.Source →
EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off products
- Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Maximum concentration: Rinse-off productsSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 9 composition records across product categories including Construction and building materials, Laboratory supplies, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Dye.
- EPA CPDat observed this chemical in 9 composition records across product categories including Construction and building materials, Laboratory supplies, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Dye.Source →
USFDAinactive ingredient databaseRoute: ORAL; Dosage form: TABLET; Potency: 0.83 mg
- Route: ORAL; Dosage form: TABLET; Potency: 0.83 mgSource →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →
Expert safety opinions
No expert opinion on file for CI 20470. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.
SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.
Evidence & sources
No graded research studies for CI 20470 yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.
Where this comes from
- Open →
CosIng
regulatory · updated 2026-09-23
- Open →
EU CosIng Cosmetics Regulation Annexes
regulatory · updated 2015-08-05
- Open →
EPA Chemical and Products Database
exposure · updated January 7, 2008
- Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
- Open →
FDA Inactive Ingredient Database
regulatory · updated 2026-01-09
- Open →
FDA GSRS UNII
registry · updated 2026-02-26
- Open →
openFDA Substance
registry · updated 2026-05-24
Suitability
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Good fit
Fragrance avoidance
No fragrance-linked caution surfaced in the current profile.
This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.
Where it has been recorded
How often EPA CPDat has listed CI 20470 in a product composition. These are source records, not Greenveil catalog products.
Source records
9
Named organisations
5
Construction and building materialsLaboratory suppliesCleaning and safety
Typical roles
ColorantColourant
Found in these products
Cosmetic and personal-care products that list CI 20470 are shown first. Their ingredient lists include CI 20470; each product's own rating depends on its whole formula, so it is shown on the product page, not here.
