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Basic information
- CAS
92-40-0- Standard SMILES
O=S(=O)(O)c1ccc2ccc(O)cc2c1- InChIKey
MVEOHWRUBFWKJY-UHFFFAOYSA-N- Molecular formula
- C10H8O4S
- Average molar mass
- 224.23 g/mol
- Monoisotopic mass
- 224.01432991
Names & identifiers
- Preferred name
- 7-Hydroxy-2-naphthalenesulfonic acid
- IUPAC
- 7-hydroxynaphthalene-2-sulfonic acid
- English name
- 7-hydroxynaphthalene-2-sulphonic acid
- Molecular formula
- C10H8O4S
- Molecular weight
- 224.23
Names & synonyms
92-40-02-Naphthalenesulfonic acid, 7-hydroxy-Cassella's acid7-Hydroxy-2-naphthalenesulfonic acidKIZ16K8246NSC-1704DTXSID8059053.BETA.-NAPHTHOLSULFONIC ACID F.BETA.-NAPHTHOL-.DELTA.-MONOSULFONIC ACIDRefChem:546538DTXCID6048759BETA-NAPHTHOLSULFONIC ACID F
Show more names
2-Hydroxynaphthlene-7-sulfonic acid2-Hydroxynaphthalene-7-sulfonicacid2-Hydroxy-7-naphthalenesulfonic acid(4Z)-4-(phenylmethylene)oxolane-2,3-dione
BETA-NAPHTHOL-DELTA-MONOSULFONIC ACID7-HYDROXYNAPHTHALENE-2-SULFONIC ACIDF Acid2-Naphthol-7-sulfonic acidMono F Acid7-Hydroxynaphthalene-2-sulphonic acidMono Acid FMonosulfonic acid F
Database identifiers
- CAS
92-40-0- PubChem CID
- 7089
- DTXSID
DTXSID8059053- UNII
- KIZ16K8246
- EC Number
- 202-153-0
- Nikkaji
- J4.654J
Properties
Computed structural propertiesFilling in
- XLogP
- 0.3
- 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
- Density
- 1.549 · 1.549±0.06 g/cm3(Predicted)
- pka
- 0.21 · 0.21±0.40(Predicted)
- FDA UNII
- 16 K8246 · KIZ16K8246
- EPA Substance Registry System
- 2 · 2-Naphthalenesulfonic acid, 7-hydroxy- (92-40-0)
- RIDADR
- 1759 · 1759
- TSCA
- TSCA listed
- HazardClass
- 8 · 8
- PackingGroup
- III
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Hazard information
Regulatory InformationChemical: 2-Naphthalenesulfonic acid, 7-hydroxy-
Other Safety InformationEvaluation - Chemicals not considered for in depth evaluation - Not commercially active in Australia
Regulatory information
Regulatory InformationChemical: 2-Naphthalenesulfonic acid, 7-hydroxy-
Safety data
- tsca
- TSCA listed
- ridadr
- 1759
- hazard_class
- 8
- packing_group
- III
Chemistry & industry
Uses & manufacturing
General Manufacturing Information2-Naphthalenesulfonic acid, 7-hydroxy-: INACTIVE
Applications
Uses2-Hydroxynaphthalene-7-sulfonic acid is used as an intermediate in the production of 2-aminonaphthalene-7-sulfonic acid, 2-hydroxynaphthalene-3,7-disulfonic acid, and 2,7-dihydroxynaphthalene. It has minor uses as an azo coupling component.
Preparation methods
PreparationNaphthalene-2,7-disulfonic acid is heated with aqueous sodium hydroxide under pressure at 230℃ for 5 h and then at 260℃ for another 5 h. After neutralizing and screening, the liquor is acidified to precipitate the product, which is isolated after boiling off the sulfur dioxide and cooling to 30℃.
Upstream & downstream products
Downstream products
Suppliers7 total
Dayang Chem (Hangzhou) Co.,Ltd.+86-0571-88938639 17705817739 · [email protected]
PT CHEM GROUP LIMITED+86-85511178; +86-85511178 · [email protected]
Related reactions
11 records
Compound notes
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