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3-Hydroxy-2-naphthoic acid

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3-Hydroxy-2-naphthoic acid Basic information

Product Name:
3-Hydroxy-2-naphthoic acid
CAS:
92-70-6
MF:
C11H8O3
MW:
188.18
EINECS:
202-180-8
Mol File:
92-70-6.mol
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3-Hydroxy-2-naphthoic acid Chemical Properties

Melting point:
218-221 °C(lit.)
Boiling point:
283.17°C (rough estimate)
Density 
1.43 g/cm3 (23℃)
refractive index 
1.7160 (estimate)
Flash point:
>150°C
storage temp. 
Store below +30°C.
solubility 
0.072g/l practically insoluble
pka
3.02±0.30(Predicted)
form 
Fine Crystalline Powder
color 
Yellow to beige-brown
Water Solubility 
PRACTICALLY INSOLUBLE
λmax
395nm(H2O (pH 3.5))(lit.)
Merck 
14,4835
BRN 
744100
CAS DataBase Reference
92-70-6(CAS DataBase Reference)
NIST Chemistry Reference
2-Naphthalenecarboxylic acid, 3-hydroxy-(92-70-6)
EPA Substance Registry System
3-Hydroxy-2-naphthoic acid (92-70-6)
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Safety Information

Hazard Codes 
Xn,Xi
Risk Statements 
22-36-36/37/38
Safety Statements 
26-37/39
WGK Germany 
1
RTECS 
QL1755000
TSCA 
Yes
HS Code 
29182910
Hazardous Substances Data
92-70-6(Hazardous Substances Data)
Toxicity
LD50 oral in rat: 832mg/kg

MSDS

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3-Hydroxy-2-naphthoic acid Usage And Synthesis

Chemical Properties

yellow to beige-brown fine crystalline powder

Uses

Dyes and pigments.

Uses

2-hydroxy-3-naphthoic acid (BON) is coupled with diazo compounds and their calcium salts are bright red bleed resistance pigments. The somewhat higher cost manganese salt shows better exterior durability than the calcium or barium salts. The BON red pigments are characterized by an extremely high degree of color stability, resistance to acids and alkalies and are nontoxic.

Hazard

Irritant.

Purification Methods

Crystallise it from water or acetic acid. The S-benzyisothiuronium salt has m 216-217o (from EtOH). It forms many metal complex salts. [Beilstein 10 H 333, 10 III 1084.]

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3-Hydroxy-2-naphthoic acidSupplierMore

J & K SCIENTIFIC LTD.
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021-67121386 / 800-988-0390
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Sales-CN@TCIchemicals.com
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