o-Toluic acid
- CAS No.
- 118-90-1
- Chemical Name:
- o-Toluic acid
- Synonyms
- 2-METHYLBENZOIC ACID;o-toluic;2-methyl-benzoicaci;O-TOLUYLIC ACID;o-Methylbenzoate;o-Totuic acid;ORTHO-TOLUIC ACID;o-TOLUIC ACID pure;O-Toluic acid ,99%;ORTHO TOLUIC ACID ( OTA )
- CBNumber:
- CB5852905
- Molecular Formula:
- C8H8O2
- Molecular Weight:
- 136.15
- MDL Number:
- MFCD00002477
- MOL File:
- 118-90-1.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 102-104 °C (lit.) |
|---|---|
| Boiling point | 258-259 °C (lit.) |
| Density | 1.062 g/mL at 25 °C (lit.) |
| refractive index | 1.512 |
| Flash point | 148 °C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | 1.2g/l |
| form | Needle-Like Crystalline Solid |
| pka | 3.91(at 25℃) |
| Specific Gravity | 1.062 |
| color | White to slightly yellow |
| PH | 3.1 (H2O, 20℃)(saturated aqueous solution) |
| Water Solubility | <0.1 g/100 mL at 19 ºC |
| Specific Heat Capacity | Cp(crystal): 1.28 J/(g·K), at 25℃ |
| Merck | 14,9535 |
| BRN | 1072103 |
| Henry's Law Constant | 9.7×100 mol/(m3Pa) at 25℃, Abraham and Jr. (2019) |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases. |
| InChI | 1S/C8H8O2/c1-6-4-2-3-5-7(6)8(9)10/h2-5H,1H3,(H,9,10) |
| InChIKey | ZWLPBLYKEWSWPD-UHFFFAOYSA-N |
| SMILES | Cc1ccccc1C(O)=O |
| CAS DataBase Reference | 118-90-1(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | 9NR3033Y0U |
| NIST Chemistry Reference | Benzoic acid, 2-methyl-(118-90-1) |
| EPA Substance Registry System | o-Toluic acid (118-90-1) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/37/38-22 | |||||||||
| Safety Statements | 26-36-22 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | XU1400000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29163900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
o-Toluic acid price More Price(68)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | T36404 | o-Toluic acid 99% | 118-90-1 | 100g | $69.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | T36404 | o-Toluic acid 99% | 118-90-1 | 500g | $133 | 2026-04-30 | Buy |
| TCI Chemical | T0292 | o-Toluic Acid >98.0%(T) | 118-90-1 | 25g | $43 | 2026-04-30 | Buy |
| TCI Chemical | T0292 | o-Toluic Acid >98.0%(T) | 118-90-1 | 100g | $77 | 2026-04-30 | Buy |
| Usbiological | 290756 | o-Toluic acid Asreported | 118-90-1 | 2kg | $426 | 2026-06-03 | Buy |
o-Toluic acid Chemical Properties, Uses, Production
Chemical Properties
White crystals. Slightly soluble in water; soluble in alcohol and chloroform. Combustible.
Uses
Bacteriostat.
Uses
o-Toluic acid is part of a group of Benzoic acid (B203900) derivatives that possess inhibitory activity against mushroom tyrosinases. o-Toluic acid is also used as a reagent to synthesize halogen-substituted benzoic acids (such as 2,4-Dichlorobenzoic acid [D431955]), which have potential muscle stimulating effects.
Definition
ChEBI: A methylbenzoic acid that is benzoic acid substituted by a methyl group at position 2.
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 2, p. 588, 1943
The Journal of Organic Chemistry, 25, p. 616, 1960 DOI: 10.1021/jo01074a035
Tetrahedron Letters, 22, p. 1013, 1981 DOI: 10.1016/S0040-4039(01)82853-7
Air & Water Reactions
Fine dust dispensed in air in sufficient concentrations, and in the presence of an ignition source is a potential dust explosion hazard. . Insoluble in water.
Reactivity Profile
o-Toluic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in o-Toluic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. o-Toluic acid is incompatible with strong oxidizers.
Fire Hazard
Flash point data for o-Toluic acid are not available. o-Toluic acid is probably combustible. Fine dust dispensed in air in sufficient concentrations, and in the presence of an ignition source is a potential dust explosion hazard.
Purification Methods
Crystallise the acid from *benzene (2.5mL/g) and dry in air. The S-benzylisothiuronium salt has m 146o (from aqueous EtOH). [Beilstein 9 IV 1697.]
o-Toluic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Taizhou Chemedir Biopharm-tech. Co., Ltd | 0523-86200218 18994667082 | sale1_cmd@chemedir.com | China | 58 | 64 |
| Taizhou Hongxing Chemical Co., Ltd. | +86 0523-82831157; 18652720389 | liusiyuan@hxchemical.cn | China | 33 | 58 |
| Henan Yingtian Biotechnology Co. LTD | 0370-4053511; 18339993703 | 570581550@qq.com | China | 945 | 58 |
| Huai'an Enrico Biotech Co., Ltd | 0517-83900106 19962248636 | 752281871@qq.com | China | 46 | 58 |
| Quzhou Rundong Chemical (Technology) Co. | 0570-8789886 18892685668 | info@rundongchemical.com | China | 4045 | 60 |
| 0 | 18769832557 18769832557 | 3948893484@QQ.com | China | 2977 | 58 |
| Taixing Zhongran Chemical Co.,Ltd. | 0523-87672999 13951149388 | 366249388@qq.com | China | 20 | 58 |
| Shandong Mingyao Chemical Co., Ltd. | 13287741688 | 1726061144@qq.com | China | 154 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
View Latest Price from o-Toluic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-25 | o-Toluic acid
118-90-1
|
1kg | 98% | 100 T/Month | Hebei Qujie Technology Co., Ltd. | ||
 |
2026-09-24 | O-TOLUIC ACID
118-90-1
|
$100.00 | 1000KG | 99.5% | 20 TONS | Anhui Royal Chemical Co., Ltd. | |
 |
2026-05-28 | o-Toluic acid
118-90-1
|
$10.00-30.00 | 10kg | 99% | 100000kg | Hebei Chuanghai Biotechnology Co,.LTD |
-
- o-Toluic acid
118-90-1
- 98%
- Hebei Qujie Technology Co., Ltd.
-
- O-TOLUIC ACID
118-90-1
- $100.00
- 99.5%
- Anhui Royal Chemical Co., Ltd.
-
- o-Toluic acid
118-90-1
- $10.00-30.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
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