Homophthalic acid
Synonym(s):α-Carboxy-o-toluic acid;2-Carboxyphenylacetic acid
- CAS NO.:89-51-0
- Empirical Formula: C9H8O4
- Molecular Weight: 180.16
- MDL number: MFCD00004326
- EINECS: 201-913-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-01-27 09:38:02

What is Homophthalic acid?
Chemical properties
off-white to light yellow or pale green powder
The Uses of Homophthalic acid
antidepressant
The Uses of Homophthalic acid
A remainder phthalic acid.
What are the applications of Application
Homophthalic acid is a remainder phthalic acid
Synthesis Reference(s)
The Journal of Organic Chemistry, 58, p. 4745, 1993 DOI: 10.1021/jo00069a047
Purification Methods
Crystallise the acid from boiling H2O (25mL/g; 63mL/g at 20o), aqueous AcOH (m 180o) Dry it at 100o. The S-benzylisothiuronium salt has m 155-156o (from EtOH). [Price Org Synth 22 611942, Grummitt et al. Org Synth Coll Vol III 449 1955, Beilstein 9 H 857, 9 II 617, 9 III 4266, 9 IV 3343.] The anhydride [703-59-3] M 162.1 has m 141-142o. [Beilstein 17/11 V 270.]
Properties of Homophthalic acid
Melting point: | 178-182 °C (lit.) |
Boiling point: | 389.5±17.0 °C(Predicted) |
Density | 1.392±0.06 g/cm3(Predicted) |
storage temp. | Sealed in dry,Room Temperature |
solubility | soluble in Dimethylformamide |
form | Powder |
pka | 3.72±0.36(Predicted) |
color | Off-white to light yellow or pale green |
Water Solubility | 12 g/L (20 ºC) |
BRN | 1872069 |
CAS DataBase Reference | 89-51-0(CAS DataBase Reference) |
EPA Substance Registry System | Benzeneacetic acid, 2-carboxy- (89-51-0) |
Safety information for Homophthalic acid
Signal word | Warning |
Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for Homophthalic acid
InChIKey | ZHQLTKAVLJKSKR-UHFFFAOYSA-N |
Homophthalic acid manufacturer
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