Basic information
- CAS
132-57-0- Standard SMILES
O=S(=O)(O)c1cccc2ccc(O)cc12- InChIKey
HUYJTJXLNBOVFO-UHFFFAOYSA-N- Molecular formula
- C10H8O4S
- Average molar mass
- 224.23 g/mol
- Monoisotopic mass
- 224.01432991
Names & identifiers
- Preferred name
- Croceic acid
- IUPAC
- 7-hydroxynaphthalene-1-sulfonic acid
- English name
- 7-hydroxynaphthalene-1-sulphonic acid
- Molecular formula
- C10H8O4S
- Molecular weight
- 224.23
Names & synonyms
Croceic acid132-57-0Bayer's Acid1-Naphthalenesulfonic acid, 7-hydroxy-7-hydroxy-1-naphthalenesulfonic acidM1490B3Z3GDTXSID90596267-hydroxy-1-naphthalenesulphonic acid7-HNS acidRefChem:128501DTXCID9034076205-066-6
Show more names
7-hydroxynaphthalene-1-sulfonic acid7-Hydroxynaphthalene-1-sulphonic acid2-naphthol-8-sulfonic acidUNII-M1490B3Z3GEINECS 205-066-6CROCEINE ACIDCROCEIN ACID2-Naphthol-8-sulfosaure
Database identifiers
- CAS
132-57-0- PubChem CID
- 67237
- DTXSID
DTXSID9059626- UNII
- M1490B3Z3G
- EC Number
- 205-066-6
- Nikkaji
- J5.572G
Properties
Computed structural properties
- XLogP
- 1
- Topological polar surface area
- 83 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 1
- Heavy atoms
- 15
- Formal charge
- 0
- Complexity
- 319
Physicochemical properties
- Boiling point
- 335.63 °C · 335.63°C (rough estimate)
- Density
- 1.4643 · 1.4643 (rough estimate)
- refractive index
- 1.54 · 1.5400 (estimate)
- pka
- 0.26 · 0.26±0.40(Predicted)
- FDA UNII
- 1490 B3Z3G · M1490B3Z3G
- EPA Substance Registry System
- 1 · 1-Naphthalenesulfonic acid, 7-hydroxy- (132-57-0)
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 319 · H319-H315
- Precautionary statements
- 264 · P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P
- TSCA
- TSCA listed
- REACH Registrations
- Active
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 50% (1 of 2) of reports.
Warning
H315 (50%): Causes skin irritation [Warning Skin corrosion/irritation]
P264, P264+P265, P280, P302+P352, P305+P351+P338, P321, P332+P317, P337+P317, and P362+P364 (click each P-code to see the statement)
Aggregated GHS information provided per 2 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory InformationREACH registered substance: 7-hydroxynaphthalene-1-sulphonic acid (EC: 205-066-6)
Hazard Classes and CategoriesSkin Irrit. 2 (50%)
Safety data
- tsca
- TSCA listed
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- Hazard statements
- H319-H315
- REACH Registrations
- Active
- Precautionary statements
- P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P
Chemistry & industry
Uses & manufacturing
General Manufacturing Information1-Naphthalenesulfonic acid, 7-hydroxy-: INACTIVE
Applications
UsesUsed as an intermediate of acid dyes and direct azo dyes.
Preparation methods
Preparation7-hydroxynaphthalene-1-sulphonic acid was prepared by sulfonation of 2-naphthol with 98% sulfuric acid at low temperature.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers5 total
青岛海智微元生物科技有限公司18317699790 18317699790 · [email protected]
Alfa Chemistry+1-5166625404 · [email protected]
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.+8618950047208 · [email protected]
BOC Sciences+1-631-485-4226 · [email protected]
DAYANG CHEM (HANGZHOU) CO.,LTD+86-88938639 +86-17705817739 · [email protected]
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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