3-Methylsalicylic acid Chemical Properties

Melting point:

163-165 °C (lit.)

Boiling point:

234.6°C (rough estimate)

Density 

1.2143 (rough estimate)

vapor pressure 

0.065-0.307Pa at 25℃

refractive index 

1.4945 (estimate)

storage temp. 

Inert atmosphere,Room Temperature

solubility 

methanol: soluble5%, clear to slightly hazy (colorlessto faint brown)

pka

pK1:2.99 (25°C)

form 

Fine Powder

color 

Almost white

PH

2.8 (1.5g/l, H2O, 20℃)

Water Solubility 

1.5 g/L (20 ºC)

Merck 

14,2581

BRN 

2086811

InChIKey

WHSXTWFYRGOBGO-UHFFFAOYSA-N

LogP

2.79-2.86

CAS DataBase Reference

83-40-9(CAS DataBase Reference)

NIST Chemistry Reference

Hydroxytoluic acid(83-40-9)

EPA Substance Registry System

3-Methylsalicylic acid (83-40-9)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-37/38-41

Safety Statements 

26-36/39-22

RIDADR 

UN 2811

WGK Germany 

3

RTECS 

BZ4385000

TSCA 

Yes

HS Code 

29182990

Toxicity

LD50 oral in rat: 445mg/kg

MSDS

• Language:English Provider:Hydroxytoluic acid
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

3-Methylsalicylic acid Usage And Synthesis

Chemical Properties

White To Slightly Reddish Crystalline Solid

Uses

analgesic, antiseptic

Uses

Toxicity is similar to salicylic acid. Used in manufacturing of dyes

Uses

3-Methylsalicylic acid is used in manufacture of dyes.

Definition

ChEBI: A monohydroxybenzoic acid consisting of salicylic acid carrying a methyl group at the 3-position.

Synthesis Reference(s)

Synthesis, p. 758, 1984 DOI: 10.1055/s-1984-30960

General Description

3-Methylsalicylic acid reacts with WOCl₄ to yield tungsten(VI) oxo-salicylate complexes.

Purification Methods

Crystallise the acid from water. [Beilstein 10 H 220, 10 II 131, 10 III 505, 10 IV 601.]

3-Methylsalicylic acid(83-40-9)Related Product Information

• 3-Nitrosalicylic acid
• m-Toluic acid
• 3,5-Dihydroxybenzoic acid
• 2'-Hydroxy-3-phenylpropiophenone
• o-Toluidine
• Folic acid
• Citric acid
• o-Toluic acid
• Butylparaben
• 4-Hydroxybenzoic acid
• Ethyl 2-(Chlorosulfonyl)acetate
• Methyl salicylate
• o-Cresol
• 3-Hydroxybenzoic acid
• o-Toluoyl chloride
• Acetylsalicylic acid
• 2-Methylbenzyl chloride
• Methylparaben