3-Methylsalicylic acid
3-Methylsalicylic acid
CAS: 83-40-9
Molecular Formula: C8H8O3
3-Methylsalicylic acid - Names and Identifiers
| Name | 3-Methylsalicylic acid |
| Synonyms | 3-MS Cresotic acid o-Cresotic acid o-Kresotinic Acid 3-Methylsalicylic ac 2-methylsalicylicacid 3-Methylsalicylic acid 3-Methylsalycilic acid 2-hydroxy-m-toluic acid 2-hydroxy-3-methylbenzoate 2-hydroxy-3-methyl-benzoicaci Acido 3-ossi-5-metil-benzoico 2-Hydroxy-3-methylbenzoic acid 2-Hydroxy-3-methyl benzoic acid |
| CAS | 83-40-9 |
| EINECS | 201-473-8 |
| InChI | InChI=1/C8H8O3/c1-5-3-2-4-6(7(5)9)8(10)11/h2-4,9H,1H3,(H,10,11)/p-1 |
| InChIKey | WHSXTWFYRGOBGO-UHFFFAOYSA-N |
3-Methylsalicylic acid - Physico-chemical Properties
| Molecular Formula | C8H8O3 |
| Molar Mass | 152.15 |
| Density | 1.2143 (rough estimate) |
| Melting Point | 163-165 °C (lit.) |
| Boling Point | 234.6°C (rough estimate) |
| Flash Point | 145.4°C |
| Water Solubility | 1.5 g/L (20 ºC) |
| Solubility | methanol: soluble5%, clear to slightly hazy (colorlessto faint brown) |
| Vapor Presure | 0.065-0.307Pa at 25℃ |
| Appearance | Fine Powder |
| Color | Almost white |
| Merck | 14,2581 |
| BRN | 2086811 |
| pKa | pK1:2.99 (25°C) |
| PH | 2.8 (1.5g/l, H2O, 20℃) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | 1.4945 (estimate) |
| MDL | MFCD00002448 |
| Physical and Chemical Properties | Melting point 164-167°C water-soluble 1.5g/L (20°C) |
| Use | Useful as intermediates in organic synthesis and dyes |
3-Methylsalicylic acid - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/39 - S22 - Do not breathe dust. |
| UN IDs | UN 2811 |
| WGK Germany | 3 |
| RTECS | BZ4385000 |
| TSCA | Yes |
| HS Code | 29182990 |
| Toxicity | LD50 oral in rat: 445mg/kg |
3-Methylsalicylic acid - Nature
Open Data Verified Data
White or reddish crystalline powder. The melting point was 163-164 °c. With the simultaneous evaporation of water vapor. Soluble in hot water, soluble in alcohol, ether, chloroform and sodium hydroxide solution, slightly soluble in cold water.
Last Update：2024-01-02 23:10:35
3-Methylsalicylic acid - Preparation Method
Open Data Verified Data
It is produced by a solid phase method and a solvent method, which do not require the treatment of dry powder of O-cresol sodium salt, which is highly hygroscopic, compared with the latter. The reaction material is a liquid phase carboxy reaction when CO2 is completed once, without the need for semi-vapor phenol, can be produced in the ordinary pressure equipment, reducing the use of dehydration and carbon carboxylation equipment. The principle of production is the same for both methods.
Last Update：2022-01-01 10:43:10
3-Methylsalicylic acid - Introduction
Solubility in water: 1.5g/l (20 C), soluble in lye, soluble in chloroform, ethanol and ether.
Last Update：2022-10-16 17:29:13
3-Methylsalicylic acid - Use
Open Data Verified Data
This product can be used for the manufacture of azo dyes, especially acid medium bleaching blue B Dye, it can also be used as raw material for the preparation of blue, purple, brown, green and other triphenylmethane dye more than 20 kinds of media.
Last Update：2022-01-01 10:43:09
3-Methylsalicylic acid - Reference Information
| LogP | 2.79-2.86 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| biological activity | 3-methylsalicylacid is a salicylic acid derivative that acts on human plasma by activating the fibrinolytic system, and has a significant fibrinolytic activity. |
| Use | This product can be used in the manufacture of azo dyes, especially acid medium bleaching blue B Dye, it can be used as raw material to prepare blue, purple, brown, Green and other triphenylmethane dye more than 20 kinds of media. used as intermediate in organic synthesis and dyes |
| production method | It is produced by solid phase method and solvent method, the latter does not require the treatment of a dry powder of the highly hygroscopic sodium salt of O-cresol. The reaction material is a liquid phase carbon carboxylation reaction, CO2 is completed once, without the need for semi-vapor phenol, can be produced in the ordinary pressure equipment, reducing the use of dehydration and carbon carboxylation equipment. The principle of production is the same for both methods. |
Last Update：2024-04-09 02:00:12
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