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99-06-9

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Identification

Name
3-Hydroxybenzoic acid
CAS
99-06-9
Synonyms
3-HYDROXYBENZOIC ACID
M-HYDROXYBENZOIC ACID
RARECHEM AL BO 0049
3-Carboxyphenol
3-hydroxy-benzoicaci
Acido m-idrossibenzoico
acidom-idrossibenzoico
Benzoic acid, m-hydroxy-
Kyselina 3-hydroxybenzoova
kyselina3-hydroxybenzoova
meta-Hydroxybenzoic acid
m-Hba
m-hydroxy-benzoicaci
m-Salicylic acid
m-salicylicacid
m-Hydroxybenzoic Acid 3-Hydroxybenzoic Acid
m-HydroxybenzoicacidM-HydroxybenzoicAcid
3-Hydroxybenzoicacid,97%
3-Hydroxide benzoic acid
m-Hydroxybenzoic
EINECS(EC#)
202-726-5
Molecular Formula
C7H6O3
MDL Number
MFCD00002506
Molecular Weight
138.12
MOL File
99-06-9.mol

Chemical Properties

Appearance
white to light yellow crystal powder
Melting point 
200-203 °C (lit.)
mp 
201 °C
Boiling point 
213.5°C (rough estimate)
density 
1.4850
FEMA 
4431 | 3-HYDROXYBENZOIC ACID
refractive index 
1.4600 (estimate)
Fp 
220 °C
storage temp. 
Store below +30°C.
form 
Powder
pka
4.06(at 19℃)
color 
White to off-white
PH
3 (H2O)Aqueous solution
Water Solubility 
slightly soluble
BRN 
508160
InChIKey
IJFXRHURBJZNAO-UHFFFAOYSA-N
Uses
Intermediate for plasticizers, resins, light stabiliziers, petroleum additives, pharmaceuticals.
CAS DataBase Reference
99-06-9(CAS DataBase Reference)
NIST Chemistry Reference
Benzoic acid, 3-hydroxy-(99-06-9)
EPA Substance Registry System
99-06-9(EPA Substance)

Safety Data

Hazard Codes 
Xn,Xi
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
WGK Germany 
3

RTECS 
DH1924980

Hazard Note 
Irritant
TSCA 
Yes
HS Code 
29182990

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
white to light yellow crystal powder
Definition
ChEBI: A monohydroxybenzoic acid that is benzoic acid substituted by a hydroxy group at position 3. It has been isolated from Taxus baccata.
Reactions
m-Hydroxybenzoic Acid, of the three hydroxybenzoic acids, the metaisomer is of least commercial importance. Unlike salicylic acid, m-hydroxybenzoic acid does not undergo the Friedel-Crafts reaction. It can be converted in 80% yield to m-aminophenol by the Schmidt reaction, which involves treating the acid with hydrazoic acid in trichloroethylene in the presence of sulfuric acid at 40 °C.
Synthesis Reference(s)
Tetrahedron Letters, 9, p. 3845, 1968 DOI: 10.1016/S0040-4039(01)99116-6
Purification Methods
Crystallise the hydroxyacid from absolute EtOH. [Beilstein 10 IV 315.]

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