Basic information
- CAS
118-32-1- Standard SMILES
O=S(=O)(O)c1cc(S(=O)(=O)O)c2cc(O)ccc2c1- InChIKey
DOBIZWYVJFIYOV-UHFFFAOYSA-N- Molecular formula
- C10H8O7S2
- Average molar mass
- 304.3 g/mol
- Monoisotopic mass
- 303.97114494
Names & identifiers
- Preferred name
- 2-Naphthol-6,8-disulfonic acid
- IUPAC
- 7-hydroxynaphthalene-1,3-disulfonic acid
- English name
- 2-Naphthol-6,8-disulfonic acid
- Molecular formula
- C10H8O7S2
- Molecular weight
- 304.3
Names & synonyms
118-32-12-Naphthol-6,8-disulfonic acidG Acid1,3-Naphthalenedisulfonic acid, 7-hydroxy-7-Hydroxy-1,3-naphthalenedisulfonic acid2-Hydroxynaphthalene-6,8-disulfonic acidbeta-Naphtholdisulfonic acid GUNII-5995F5R8Y9.beta.-Naphtholdisulfonic acid Gbeta-Naphthol-gamma-disulfonic acidNSC 2073NSC-2073
Show more names
-Naphthol-disulphonicacidβ-Naphtholdisulfonic acidNAPHTHOL-6,8-DIPOTASSIUMDISUFONATE7-hydroxy-3-naphthalenedisulfonicacid7-hydroxynaphthalene-1,3-disulfonicaci7-Hydroxy-1,3-naphthalenedisulfonicacid2-Hydroxynaphthalene-6,8-disulfonicacid7-hydroxynaphthalene-1,3-disulphonicacid
EINECS 204-245-65995F5R8Y9DTXSID30594702-NAPHTHOL-6,8-DISULFONIC ACID [MI]RefChem:88637DTXCID3033430204-245-67-hydroxynaphthalene-1,3-disulfonic acid
Database identifiers
- CAS
118-32-1
Properties
Computed structural properties
- XLogP
- 0.3
- Topological polar surface area
- 146 Ų
- Hydrogen bond donors
- 3
- Hydrogen bond acceptors
- 7
- Rotatable bonds
- 2
- Heavy atoms
- 19
- Formal charge
- 0
- Complexity
- 527
Physicochemical properties
- Boiling point
- 415.13 °C · 415.13°C (rough estimate)
- Density
- 1.7421 · 1.7421 (rough estimate)
- refractive index
- 1.6 · 1.6000 (estimate)
- form
- solid
- pka
- -0.33 · -0.33±0.40(Predicted)
- color
- Off-white
- FDA UNII
- 5995 F5R8Y9 · 5995F5R8Y9
- EPA Substance Registry System
- 1 · 1,3-Naphthalenedisulfonic acid, 7-hydroxy- (118-32-1)
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 319 · H319-H335-H302+H312+H332-H315
- Precautionary statements
- 280 · P280-P301+P312-P362+P364
- TSCA
- TSCA listed
- HS Code
- 2904100090 · 2904100090
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 ClassificationNot Classified
Hazard information
Regulatory InformationChemical: 1,3-Naphthalenedisulfonic acid, 7-hydroxy-
Hazard Classes and CategoriesNot Classified
Safety data
- tsca
- TSCA listed
- hs_code
- 2904100090
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- Hazard statements
- H319-H335-H302+H312+H332-H315
- Precautionary statements
- P280-P301+P312-P362+P364
Chemistry & industry
Uses & manufacturing
General Manufacturing Information1,3-Naphthalenedisulfonic acid, 7-hydroxy-: ACTIVE
Applications
UsesThe G acid is aminated (Bucherer reaction) to give 2-aminonaphthalene-6,8- disulfonic acid and subjected to caustic fusion at 200℃ to yield 2,8-dihydroxynaphthalene-6-sulfonic acid (a precursor of g acid). It is also used as a coupling component for a wide range of azo colorants, e.g., C.I. Acid Orange 10, C.I. Acid Red 187, and C.I. Food Red 7.
Upstream & downstream products
Upstream raw materials
Downstream products
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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