Salicylic acid CAS 69-72-7

Yam khoom

Specification

Qhov tshwm sim

Ib tug dawb, los yog yuav luag dawb, crystalline hmoov

los yog dawb los yog colourless, acicular crystals

Kev daws

Ntshiab thiab tsis muaj xim

Cov cim

Me ntsis soluble nyob rau hauv dej, dawb soluble nyob rau hauv ethanol (96%), sparingly soluble nyob rau hauv methylene chloride

Kev txheeb xyuas

Melting point 158 ​​degree -161 degree

IR spectrum ntawm cov qauv ua raws li Salicylic acid CRS

Poob rau ziab

Tsawg dua lossis sib npaug rau 0.5%

Residue ntawm ignition

Tsawg dua lossis sib npaug rau 0.05%

Cov hlau hnyav

Tsawg dua lossis sib npaug li 20ppm

Sulfates

Tsawg dua lossis sib npaug li 200ppm

Chlorides

Tsawg dua los yog sib npaug li 100ppm

Cov khoom muaj feem xyuam

{{0}}Hydroxybenzoic acid Tsawg dua lossis sib npaug li 0.1%

{{0}}Hydroxyisophthalic acid Tsawg dua lossis sib npaug li 0.05%

Phenol Tsawg dua lossis sib npaug rau 0.02%

Lwm yam impurities Tsawg dua lossis sib npaug rau 0.05%

Tag nrho cov impurities Tsawg dua lossis sib npaug rau 0.2%

Assay (ntawm qhuav hauv paus)

Muaj C₇H₆O₃ 99.0%-100.5%