| Formula | C7H6O3 |
| Molecular weight | 138.122 |
| CAS | 69-72-7 |
| EINECS | 200-712-3 |
| Appearance | White crystalline powder |
| Packing | 25kg/bag, 25kg/drum |
1.Used as the standard of alkali and iodine titration, fluorescent indicator and complex indicator.
2.It is used as anti-focusing agent and ultraviolet absorber and foaming agent in rubber industry.
3.It is used as the indicator, masking agent, titanium, zirconium, tungsten and other ions of the color rendering agent and anticorrosive agent.
4.It is used as additive in some weak acidic electrolyte, and also can be used as complexing agent of electroplating or chemical plating.
5.Used as cosmetic preservative, mainly used in flower water, prickly heat water, quinine head water and other water cosmetics. In addition to antiseptic and bactericidal effect, there are sweat odor, itching and swelling, pain and anti-inflammatory functions.
6.used as raw materials for the pharmaceutical industry, used in the preparation of aspirin, sodium salicylate, salicylamide, analgesic, salicylic acid phenyl ester, blood-67 and other drugs. Dyestuff industry for the preparation of mordant pure yellow, direct brown 3GN, acid chrome yellow and so on. Also used as rubber vulcanization retardant and disinfection antiseptic.
7.used as a promoter of epoxy resin curing, can also be used as an antiseptic, can also be used to prepare methyl salicylate, ethyl salicylate and other synthetic fragrances, but also can be used in the dyestuff industry as a raw material for the preparation of direct dyes and acid dyes, but also used as a rubber anti-scorching agent, disinfectant and so on.
8.a small amount used in the preparation of animal flavor flavor and other daily flavor, trace used in food, play the role of preservatives.
| Item | Standard | Result | |
| Appearance | White or almost white, crystalline powder or colorless crystals | White crystalline powder | |
| Identification | A.Melting point of salicylic acid(℃) | 158-161 | 160 |
| B. IR-Spectrum | Complies | Complies | |
| C.Ferric Acid reaction test | Complies | Complies | |
| Appearance of solution | Clear and colorless | Clear and colorless | |
| Chloride (%) | ≤0.010 | ＜0.010 | |
| Sulfate (%) | ≤0.02 | ＜0.02 | |
| Heavy metals | ≤20PPM | ＜10PPM | |
| Loss on Drying | ≤0.5 | 0.2 | |
| Sulphated ash (Residue on ignition (%) | ≤0.05 | 0.03 | |
| Related Substances 4-hydroxybenzoic acid (%) | ≤0.1 | 0.03 | |
| 4-hydroxyisophthalic acid (%) | ≤0.05 | 0.01 | |
| Phenol (%) | ≤0.02 | 0.005 | |
| Other impurities(%) | ≤0.05 | ＜0.05 | |
| Total impurities(%) | ≤0.20 | ＜0.20 | |
| Assay (%) | 99.5-100.5 | 99.6 | |
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