3-Amino-1,5-naphthalenedisulfonic acid

Basic Information

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CAS Number

131-27-1

Molecular Formula

C10H9NO6S2

Molecular Weight

303.32 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Boiling Point

205.8°C (rough estimate)

Refractive Index

1.7330 (estimate)

SMILES

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C1=CC2=C(C=C(C=C2S(=O)(=O)O)N)C(=C1)S(=O)(=O)O

InChI

InChI=1S/C10H9NO6S2/c11-6-4-8-7(10(5-6)19(15,16)17)2-1-3-9(8)18(12,13)14/h1-5H,11H2,(H,12,13,14)(H,15,16,17)

InChIKey

MTJGVAJYTOXFJH-UHFFFAOYSA-N

LogP

0.9154000000000002

Topological Polar Surface Area

134.76 Å²

Hydrogen Bond Donor/Acceptor

4 / 7

Complexity

531

Synonyms & References

English

MFCD00035722
3-aminonaphthalene-1,5-disulfonicacid
X5M28DHP3K
beta-Naphthylaminedisulfonic acid
W-108335
MTJGVAJYTOXFJH-UHFFFAOYSA-N
BRN 3104699
Kyselina 2-naftylamin-4,8-disulfonova
2-aminonaphthalene-4,8-disulphonic acid
AC-11137
1,5-Naphthalenedisulfonic acid, 3-amino-
3-Amino-1,5-naphthalenedisulfonic acid
NSC7558
FT-0623507
2-Amino-4,8-naphthalenedisulfonic acid
Kyselina C [Czech]
Kyselina 2-naftylamin-4,8-disulfonova [Czech]
Acid IV
NS00002529
131-27-1
UNII-X5M28DHP3K
WLN: L66J BSWQ DZ GSWQ
3-aminonaphthalene-1,5-di-sulfonic acid
NSC-7558
Aminonaphthalene disulfonic acid
3-aminonaphthalene-1,5-disulfonic acid
2-Naphthylamine-4,8-disulfonic acid
beta-Naphthylamine-4,8-disulfonic acid
A806230
4,8-Disulfo-2-naphthylamine
4,8-Disulfo-2-naphthalamine

MDL Number

MFCD00035722

Customs Code

2921499090

FAQ

What are the physical and chemical properties of 3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1)?

3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1) is a crystalline solid with a molecular weight of approximately 243.19 g/mol. It is poorly soluble in water and moderately soluble in organic solvents. Chemically, it is a strong acid and shows high reactivity in acidic conditions. It is commonly used as a pH indicator, dye, and in chemical analyses.

How is 3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1) typically synthesized?

3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1) is typically synthesized by the sulfonation of 1,5-naphthalenedisulfonic acid followed by alkylation and reduction. Common catalysts include sulfuric acid and hydrogen bromide. The process yields a product with high purity and selectivity.

What industries use 3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1)?

3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1) is primarily used in the pharmaceutical industry for drug synthesis and analysis. It also finds applications in the dye industry, textile manufacturing, and as a pH indicator in analytical chemistry.

What precautions should be taken when handling 3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1)?

When handling 3-Amino-1,5-naphthalenedisulfonic acid (CAS: 131-27-1), use personal protective equipment (PPE) including gloves, goggles, and a lab coat. Work in a well-ventilated area or fume hood to avoid inhalation. Store the compound in a cool, dry place away from ignition sources. In case of spill, clean up carefully and consult a safety data sheet (SDS) for detailed instructions.