| CAS NO |
69-72-7 |
| Product Name |
Salicylic acid |
| Alias |
Keralyt Rutranex Duofilm o-hydroxybenzoic acidAcid |
| Molecular formula |
C7H6O3 isomers |
| Molecular Weight |
138.12 |
| EINECS NO |
200-712-3 |
| IUPAC nominate |
2-hydroxybenzoic acid |
| inchi |
InChI=1S/C7H6O3/c8-6-4-2-1-3-5(6)7(9)10/h1-4,8H,(H,9,10) |
| InChIkey |
YGSDEFSMJLZEOE-UHFFFAOYSA-N |
| Canonical Smiles |
C1=CC=C(C(=C1)C(=O)O)O |
| Physicochemical Attribute |
| Density: |
1.44 |
| Melting point: |
158-161 ℃ |
| Boiling point: |
211 ℃ (20 mmHg) |
| The refractive index: |
1565 |
| Sparkle: |
157 ℃ |
| Vapor pressure: |
1 mm Hg (114 ° C) |
| PSA: |
57.53 |
| LogP: |
1.0904 |
| Solubility: |
1.8 g/L (20 oC) |
| Biggest Λ: |
210 nm, 234 nm, 303 nm |
| Steam density: |
4.8 (vs air) |
| Appearance: |
White to grayish white crystalline powder |
| Storage: |
1. Should be stored in a cool, ventilated, dry, away from fire and heat source, and explosive goods and antioxidant. 2. The package lined with plastic sheets, coat sacks or pp woven bag or fiberboard barrels packaging. 3. Isolation and explosives, oxidant. Avoid light preservation. |
| Spontaneous combustion temperature: |
500 ° c. |
| Chemical properties: |
Salicylic acid has the formula C6H4(OH) COOH, where the OH group is ortho to the carboxyl group. It is also known as 2- hydroxybenzoic acid. It is poorly soluble in water (2 g / L at 20 °C). Aspirin (acetyl salicylic acid or ASA) can be prepared by the esterification of the phenolic hydroxyl group of salicylic acid with the acetyl group from acetic anhydride or acetyl chloride. |
| Corrosion resistance: |
Non – corrosive |
| Break down: |
When heated to decomp it emits acrid smoke and irritating fumes. |
| Heat of combustion: |
3.026 millijoules per mole |
| Bouquet: |
SYNTHETIC ACID IS ODORLESS |
| PH: |
2.4 (H2O) (saturated solution) |
| Physical properties: |
White needle crystal or monoclinic crystal edges, pungent. Slightly soluble in water, soluble in acetone, turpentine oil, ethanol, ethyl ether, benzene and chloroform. |
| Acidity coefficient (pka) : |
2.98 (at 25 ℃) |
| Solubility: |
Slightly soluble in cold water, soluble in hot water, ethanol, ether and acetone, soluble in hot benzene. 1 g of this product is soluble in 460 ml water, 15 ml hot water, and 2.7 ml of alcohol, 3 ml of acetone, 42 ml of chloroform, ether 3 ml, 135 ml of benzene, 52 ml of turpentine. |
| Stability: |
1. The stability in the air. See the light color gradually. Poisonous. 2. Pressure sharply heating decomposition of phenol and carbon dioxide. 1 g salicylic acid can be dissolved in 460 ml water, 15 ml and 2.7 ml water ethanol, 3 ml 42 ml 3 ml of acetone, ethyl ether, chloroform, benzene, 52 ml 135 ml turpentine, about 60 ml glycerin and 80 ml of petroleum ether. Add sodium phosphate, borax etc can increase the solubility of salicylic acid in water. Salicylic acid aqueous solution of the pH value of 2.4. Salicylic acid and ferric chloride aqueous solution to generate special purple. 3. This product is to stimulate the skin, mucous membrane, because can react with proteins in the body tissues, so have corrosion effect. Can make the corneal proliferation after stripping. Toxicity than phenol is weak, but doses can cause vomiting, diarrhea, headache, sweating, rash, shortness of breath frequency, acidosis and excitement. Severe dyspnea, collapse, eventually die of a heart attack. Because of salicylic acid from the kidneys, often cause acute nephritis. Rabbit oral LD50:1.3 mg/kg. The operator shall wear labor protection appliance. 4. In flue-cured tobacco leaves, burley tobacco leaf tobacco, tobacco leaf tobacco, flue gas. 5. Trace in water Yang Shuzhong exist. |
| Storage temperature: |
Store at RT. |
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