Sudan black B is a member of the class of perimidines that is 2,2-dimethyl-2,3-dihydro-1H-perimidine carrying a [4-(phenyldiazenyl)naphthalen-1-yl]diazenyl substituent at position 6.
Definition
Sudan black B is a member of the class of perimidines that is 2,2-dimethyl-2,3-dihydro-1H-perimidine carrying a [4-(phenyldiazenyl)naphthalen-1-yl]diazenyl substituent at position 6. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections and for staining of protein bound lipids in paraffin sections. It has a role as a histological dye. It is a member of azobenzenes, a member of perimidines and a bis(azo) compound.
Source: PubChem
US FDA substance register · UNII 9YDL1Q990E · registered name SOLVENT BLACK 3 · single chemical substance
Cosmetic roles
Safety & regulatory references
- Banned
- Argentina · ASEAN · Brazil · China · European Union · South Korea · Taiwan · United Kingdom
Source: EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex II (prohibited substances), entry 1265
Restriction II/1265 · Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 4197-25-5
- EC No.EU chemical inventory number
- 224-087-1
- DTXSIDUS EPA chemical ID
- DTXSID0052091
- DTXCIDUS EPA compound ID
- DTXCID1030658
- IUPAC
- 2,2-Dimethyl-6-{[4-(phenyldiazenyl)naphthalen-1-yl]diazenyl}-2,3-dihydro-1H-perimidine
- Molecular formula
- C29H24N6
- Molecular weight
- 456.553 g/mol
Measured properties
- Appearance
- Powder, [Sigma-Aldrich MSDS] · solid
- Odour
- odourless
- pH
- 7.2
- Melting/freezing point
- 180~186 ℃
- Vapour density
- 15.8
- Relative density
- 1.31
- n-Octanol/water partition coefficient (Kow)
- 8.81
- Molecular weight
- 456.541060
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 4 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.
- Dye2
- Pigment2
Source: US EPA CompTox dashboard
Linked databases 19
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU prohibited substances (Annex II)
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic regulatory information 2 3
- PubChem 2
- Taiwan FDA cosmetic ingredients
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · English · Chinese