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Salicylic acid

Cas:
69-72-7
Molecular Structure:
MDL:
MFCD00002439
Molecular Formula:
C7H6O3;2-(HO)C6H4CO2H
Molecular Weight:
138.12
Alias:
柳酸,沙利西酸,撒酸,邻羟基苯甲酸,2-羟基苯甲酸
Product order:
Name Specifications Packing Price Delivery
Salicylic acid Ph. Eur., BP, USP, 99.5-100.5% 1kg RMB 173.8 Consulting service
Salicylic acid GR 1kg RMB 173.8 现货
Salicylic acid AR 1kg RMB 140.8 现货
Salicylic acid GR 250g RMB 52.8 现货
Salicylic acid AR 250g RMB 30.8 现货
Character:
白色针状结晶或粉末。有辛辣味。易燃。低毒。在空气中稳定,但遇光渐渐改变颜色。在76℃时升华。急剧加热时分解为酚及二氧化碳。微溶于水,易溶于乙醇、乙醚。1克本品能溶于460毫升水,15毫升热水,2.7毫升醇,3毫升丙酮,42毫升氯仿,3毫升醚,135毫升苯,52毫升松节油。饱和水溶液的pH 为2.4。其水溶液呈酸性反应。
Quality Standard:
Q/(HG)SJ 705-95
项目Item                                            分析纯        化学纯
                                                    (AR)          (CP)
含量(C7H6O3)Assay,%                               ≥ 99.5         99.0
熔点范围Melting range,℃                          ≤ 158.5-160.5  158.0-161.0
澄清度试验Clarity                                    合格         合格
灼烧残渣(以硫酸盐计)Ignition residue,%          ≤ 0.01         0.03
氯化物(Cl)Chloride,%                              ≤ 0.002        0.005
硫化合物(以SO4计)Sulfur compounds                 ≤ 0.005        0.015
铁(Fe)Iron,%                                     ≤ 0.0002       0.0005
重金属(以Pb计)Heavy metals,%                      ≤ 0.005        0.0015
硫酸试验Substances darkened by sulfuric acid         合格         合格

ACS级
项目名称Item                                     ACS Grade
含量Assay                                         ≥99.0%
熔点范围Melting point                             158.0-161.0℃
灼烧残渣Residue after ignition                    ≤0.01%
氯化物(Cl)Chloride(Cl)                            ≤0.001%
硫酸盐(SO4)Sulfate                                ≤0.003%
重金属(以Pb计)Heavy metals(as Pb)                 ≤5ppm
铁(Fe)Iron(Fe)                                    ≤2ppm
硫酸变黑物Substances darkened by sulfuric acid    Passes test


品级Grade                               药用级  
                                   (Ph. Eur., BP, USP)  
含量assay                              99.5-100.5% (calc. to the dried substance)
残留溶剂residual solvents,             complies
重金属heavy metals (as Pb)             ≤0.001%
相关物质related subst.                 ≤0.2%  (HPLC)
灼烧残渣ign. residue                   ≤0.05% (as SO4)
干燥损失loss on drying                 ≤0.3%
熔点mp                                 158-161 °C
氯根chloride (Cl-):                    ≤50 ppm
硫酸根sulfate (SO42-):                 ≤200 ppm
溶解性能for appearance of solution     complies
鉴别实验for identity                   complies 

Storage:
密封避光保存。
用途  测定铝、硼、铈、铜、铁、铅、锰、汞、银、钛、钨、钒、次亚硫酸盐,硝酸盐和亚硝酸盐。沉淀钍使钍从铈及其他稀土元素中分离出来,分离锆与钛。荧光指示剂;防腐剂;络合指示剂。
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