CI 15800
Calcium bis[3-hydroxy-4-(phenylazo)-2-naphthoate]
CI 15800 is linked to 2 EU annex records on this page. Inventory note: IV/26 (CI 15800) II/1331 (Pigment Red 64:1; CI 15800: when used as a substance in hair dye products).
Regulatory evidence by market
This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.
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| Market | Evidence status | Records | Source language |
|---|---|---|---|
| European Union | Evidence linked Prohibited entry found Open this evidence | 2 | English and EU languages |
| Great Britain | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Canada | Source mapped Official source mapped; ingredient rule not imported | 0 | English and French |
| New Zealand | Evidence linked Prohibited + Permitted list with conditions Open this evidence | 2 | English |
| ASEAN | Evidence linked Prohibited Open this evidence | 1 | English and national languages |
| China | Source mapped Official source mapped; ingredient rule not imported | 0 | Chinese with selected English material |
| Japan | Source mapped Official source mapped; ingredient rule not imported | 0 | Japanese; official English translation available |
| South Korea | Source mapped Official source mapped; ingredient rule not imported | 0 | Korean with some English names |
| United States | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Australia | Source mapped Official source mapped; ingredient rule not imported | 0 | English |
| Brazil | Evidence linked Prohibited Open this evidence | 1 | Portuguese with INCI crosswalks |
| India | Evidence linked Prohibited Open this evidence | 1 | English and Hindi |
| Saudi Arabia | Evidence linked Prohibited Open this evidence | 1 | Arabic and English |
Chemical identity and properties
D & C Red no. 31
- IUPAC name
- calcium bis(3-carboxy-1-phenyldiazenylnaphthalen-2-olate)
- Molecular formula
- C34H22CaN4O6
- Molecular weight
- 622.6 g/mol
- Exact mass
- 622.1165253 Da
- Topological polar surface area
- 170.0 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 10
- Covalent units
- 3
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- EPA DTXSID:DTXSID7064283
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Inventory details for CI 15800
INCI name
CI 15800
Description
Calcium bis[3-hydroxy-4-(phenylazo)-2-naphthoate]
Record provenance
- Inventory reference
- 32719
- Imported identity
- CI 15800
- Source update
- 13/08/2020
Annex records for CI 15800
3-Hydroxy-4-(phenylazo)-2-naphthoic acid and its calcium salt (Pigment Red 64:1; CI 15800) when use…
Key data
- COLORANT
- Exclusively or mainly intended to colour the cosmetic product, the body as a whole or certain parts thereof, by absorption or reflection of visible light. All authorised colorants are substances in the positive list of Annex IV to the Cosmetics Regulation 1223/2009.
Official EU ingredient-name evidence
The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.
Related inventory evidence
Ingredients with overlapping formulation functions
Additional official and scientific sources
11 external databases to check this identity in
Each link searches that source for this identity. What each source is, and its legal weight
How CI 15800 appears in the CosIng inventory
The CosIng inventory lists CI 15800 as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.
CI 15800 is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.
Frequently asked questions
Source note for CI 15800
This page combines the CosIng inventory entry for CI 15800 with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.
Use this inventory page to research CI 15800 and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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