Basic information
- CAS
6358-87-8- Standard SMILES
CCOC(=O)C1=NN(c2ccccc2)C(=O)C1N=Nc1ccc(-c2ccc(N=NC3C(=O)N(c4ccccc4)N=C3C(=O)OCC)c(Cl)c2)cc1Cl- InChIKey
PLYDMIIYRWUYBP-UHFFFAOYSA-N- Molecular formula
- C36H28Cl2N8O6
- Average molar mass
- 739.6 g/mol
- Monoisotopic mass
- 738.150886
Names & identifiers
- Preferred name
- C.I. Pigment Red 38
- IUPAC
- ethyl 4-[[2-chloro-4-[3-chloro-4-[(3-ethoxycarbonyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]phenyl]phenyl]diazenyl]-5-oxo-1-phenyl-4H-pyrazole-3-carboxylate
Names & synonyms
6358-87-8Pyrazolone RedVulcan Fast Red BIrgaplast Red PSilotermo Red BPyrazolone Red YPyrazolone Red B TonerRubber Fast Red BSanyo Pyrazolone RedRubber Fast Red BAVulcan Fast Red BAVulcan Fast Red BN
Show more names
Silogomma Fast Red BDainichi Fast Red BLIrgalite Fast Red PYSymuler Fast Pyrazolone Red BVulcan Fast Red BA-NDPlasticone Red 10457Symuler Fast Pyrazolone Red BEPyrazolone Red (Yellowish) R-6258
Database identifiers
- CAS
6358-87-8- PubChem CID
- 95076
- DTXSID
DTXSID20863750- EC Number
- 228-788-3
- Nikkaji
- J35.632H
Properties
Computed structural properties
- XLogP
- 8.2
- Topological polar surface area
- 167 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 12
- Rotatable bonds
- 13
- Heavy atoms
- 52
- Formal charge
- 0
- Complexity
- 1,340
Experimental & physicochemical properties
Food Contact SubstancesFCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR
Physical DescriptionDry Powder
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 32.1% (51 of 159) of reports.
Danger
H228 (67.9%): Flammable solid [Danger Flammable solids]
P210, P240, P241, P280, and P370+P378 (click each P-code to see the statement)
Aggregated GHS information provided per 159 reports by companies from 4 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
Chemical: 1H-Pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydro-5-oxo-1-phenyl-, diethyl ester
1H-Pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[4,5-dihydro-5-oxo-1-phenyl-, 3,3'-diethyl ester is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 1H-Pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[4,5-dihydro-5-oxo-1-phenyl-, 3,3'-diethyl ester are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
REACH registered substance: Diethyl 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate] (EC: 228-788-3)
1H-Pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydro-5-oxo-1-phenyl-, diethyl ester: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Other Safety InformationIMAP assessments - Selected benzidine-congener-based pigments: Human health tier II assessment
Hazard Classes and CategoriesFlam. Sol. 2 (67.9%)
Chemistry & industry
Uses & manufacturing
U.S. Production2023: 44,000 lb
Industry UsesPigment
General Manufacturing Information
Rubber Product Manufacturing
1H-Pyrazole-3-carboxylic acid, 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[4,5-dihydro-5-oxo-1-phenyl-, 3,3'-diethyl ester: ACTIVE
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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