3-hydroxynaphthalene-2,7-disulphonic acid

Modify Date: 2026-07-25 22:02:25

3-hydroxynaphthalene-2,7-disulphonic acid Structure
3-hydroxynaphthalene-2,7-disulphonic acid structure
Common Name 3-hydroxynaphthalene-2,7-disulphonic acid
CAS Number 148-75-4 Molecular Weight 304.29600
Density 1.816g/cm3 Boiling Point 415.13°C (rough estimate)
Molecular Formula C10H8O7S2 Melting Point N/A
MSDS N/A Flash Point N/A

Summary: 2-Naphthol-3,6-disulfonic acid (Chinese name: 2-萘酚-3,6-二磺酸;CAS number: 148-75-4;molecular formula: C10H8O7S2;molecular weight: 304.29600) is an important intermediate for food colorants, azo dyes, and functional pigments, and is also used as a fluorescent indicator and intermediate for many other reagents. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 3-hydroxynaphthalene-2,7-disulfonic acid
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.816g/cm3
Boiling Point 415.13°C (rough estimate)
Molecular Formula C10H8O7S2
Molecular Weight 304.29600
Exact Mass 303.97100
PSA 145.73000
LogP 3.20040
Index of Refraction 1.725
InChIKey USWINTIHFQKJTR-UHFFFAOYSA-N
SMILES O=S(=O)(O)c1ccc2cc(O)c(S(=O)(=O)O)cc2c1

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

HS Code 2908999090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

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3-hydroxynaphthalene-2,7-disulphonic acid Structure

3-hydroxynaphth...

CAS#:148-75-4

Learn More
Literature: Chemische Berichte, , vol. 13, p. 1956 DE3229 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 1, p. 351,377

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3-hydroxynaphthalene-2,7-disulphonic acid Structure

3-hydroxynaphth...

CAS#:148-75-4

Learn More
Literature: DE255724 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 11, p. 217

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3-hydroxynaphthalene-2,7-disulphonic acid Structure

3-hydroxynaphth...

CAS#:148-75-4

Learn More
Literature: , ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 1, p. 384

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Detail Learn More
Literature: J. Appl. Chem. USSR (Engl. Transl.), , vol. 61, # 7 p. 1540 - 1545,1412 - 1416

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3-hydroxynaphthalene-2,7-disulphonic acid Structure

3-hydroxynaphth...

CAS#:148-75-4

Learn More
Literature: DE3229 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 1, p. 377 Chemische Berichte, , vol. 13, p. 1956

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2908999090
Summary 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

EINECS 205-724-2
2,7-Naphthalenedisulfonic acid,3-hydroxy
2-hydroxynaphthalene-3,6-disulfonic acid
2-NAPHTHOL-3,6-DISULFONIC ACID
3-hydroxy-naphthalene-2,7-disulfonic acid
2-naphthol-3,6-disulphonic acid
3-Hydroxynaphthalene-2,7-disulphonic acid
2-hydroxy-3,6-naphthalenedisulfonate
2-hydroxy-naphthalene-3,6-disulphonic acid
2-hydroxy-3,6-naphthalenedisulfonic acid

  | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the boiling point of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: Boiling point of 3-hydroxynaphthalene-2,7-disulfonic acid is 415.13°C (rough estimate).
Q: What are the downstream products of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: Related downstream products(CAS) of 3-hydroxynaphthalene-2,7-disulfonic acid: 14245-98-8;92-44-4;92-27-3;2007-20-7;21371-44-8;93-01-6;135-19-3;1936-15-8;28415-92-1;71494-74-1.
Q: What is the InChIKey of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: InChIKey of 3-hydroxynaphthalene-2,7-disulfonic acid is USWINTIHFQKJTR-UHFFFAOYSA-N.
Q: What is the SMILES notation of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: SMILES notation of 3-hydroxynaphthalene-2,7-disulfonic acid is O=S(=O)(O)c1ccc2cc(O)c(S(=O)(=O)O)cc2c1.
Q: What is the molecular weight of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: Molecular weight of 3-hydroxynaphthalene-2,7-disulfonic acid is 304.29600.
Q: What is the polar surface area (PSA) of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: Polar surface area (PSA) of 3-hydroxynaphthalene-2,7-disulfonic acid is 145.73000.
Q: What is the CAS number of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: CAS number of 3-hydroxynaphthalene-2,7-disulfonic acid is 148-75-4.
Q: What is the LogP of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: LogP of 3-hydroxynaphthalene-2,7-disulfonic acid is 3.20040.
Q: What is the molecular formula of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: Molecular formula of 3-hydroxynaphthalene-2,7-disulfonic acid is C10H8O7S2.
Q: What is the English name of 3-hydroxynaphthalene-2,7-disulfonic acid?
A: The English name of 3-hydroxynaphthalene-2,7-disulfonic acid is 3-hydroxynaphthalene-2,7-disulfonic acid.

 factory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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