5-Amino-2-naphthalenesulfonic acid

Basic Information

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CAS Number

119-79-9

Molecular Formula

C10H9NO3S

Molecular Weight

223.25 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

Physical State

Powder

Melting Point

>300°C

Boiling Point

°Cat760mmHg

Solubility

soluble100mg/mL, clear, brown (1N NH4OH)

Refractive Index

1.6500 (estimate)

SMILES

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C1=CC2=C(C=CC(=C2)S(=O)(=O)O)C(=C1)N

InChI

InChI=1S/C10H9NO3S/c11-10-3-1-2-7-6-8(15(12,13)14)4-5-9(7)10/h1-6H,11H2,(H,12,13,14)

InChIKey

UWPJYQYRSWYIGZ-UHFFFAOYSA-N

LogP

1.6687000000000003

Topological Polar Surface Area

80.39 Å²

Hydrogen Bond Donor/Acceptor

3 / 4

Complexity

322

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Hazard Class

Class 8 Class 8

Synonyms & References

English

5-Aminonaphthalene-2-sulphonic acid
NSC31506
5-Amino-2-naphthalenesulfonic acid, >=95%
N2M
Cleve's beta-acid
MLS002637784
MFCD00004030
FT-0623984
NSC4984
EINECS 257-269-4
.alpha.-Naphthylamine-6-sulfonic acid
EC 204-351-2
AS-17226
W-108498
CHEMBL1234578
F19569
EN300-260987
CHEBI:44188
HMS3078E15
NSC-31506
Clevesaure
A804359
BRN 1819887
EINECS 204-351-2
5-aminonaphthalene-2-sulfonic acid
NSC 31506
SMR001547301
5-Amino-2-naphthalenesulfonic Acid, ~90%
Kyselina cleve
Z1509721030
1-Aminonaphthalene-6-sulfonic acid

MDL Number

MFCD00004030

Customs Code

29309090

FAQ

What are the physical and chemical properties of 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9)?

5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9) is a crystalline solid with a molecular weight of approximately 222.17 g/mol. It has a solubility of about 17 g/L in water at 20°C. It is moderately reactive, often used in acidic conditions for dyeing and other analytical applications.

How is 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9) typically synthesized?

5-Amino-2-naphthalenesulfonic acid is typically synthesized through the sulfonation of 2-naphthol followed by reduction of the sulfonic acid group. Common methods include using sulfur trioxide and potassium hydroxide as catalysts, with yields up to 90%. Selectivity and purity can be controlled through careful reaction conditions.

What industries use 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9)?

5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9) is used in various industries including pharmaceuticals, dyes and pigments, and environmental monitoring. It serves as a reagent in analytical chemistry and is also used in the synthesis of other chemicals and materials.

What precautions should be taken when handling 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9)?

When handling 5-Amino-2-naphthalenesulfonic acid (CAS: 119-79-9), it is important to wear appropriate personal protective equipment (PPE) such as gloves and safety glasses. Store in a well-ventilated area, away from strong acids and oxidizers. In case of spill, use appropriate spill cleanup procedures and consult the safety data sheet (SDS) for detailed instructions.