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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,鄰羥基苯甲酸,2-羥基苯甲酸
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 現(xiàn)貨
Salicylic acid AR 1kg RMB 140.8 現(xiàn)貨
Salicylic acid GR 250g RMB 52.8 現(xiàn)貨
Salicylic acid AR 250g RMB 30.8 現(xiàn)貨
Character:
白色針狀結(jié)晶或粉末。有辛辣味。易燃。低毒。在空氣中穩(wěn)定,但遇光漸漸改變顏色。在76℃時(shí)升華。急劇加熱時(shí)分解為酚及二氧化碳。微溶于水,易溶于乙醇、乙醚。1克本品能溶于460毫升水,15毫升熱水,2.7毫升醇,3毫升丙酮,42毫升氯仿,3毫升醚,135毫升苯,52毫升松節(jié)油。飽和水溶液的pH 為2.4。其水溶液呈酸性反應(yīng)。
Quality Standard:
Q/(HG)SJ 705-95
項(xiàng)目Item                                            分析純        化學(xué)純
                                                    (AR)          (CP)
含量(C7H6O3)Assay,%                               ≥ 99.5         99.0
熔點(diǎn)范圍Melting range,℃                          ≤ 158.5-160.5  158.0-161.0
澄清度試驗(yàn)Clarity                                    合格         合格
灼燒殘?jiān)ㄒ粤蛩猁}計(jì))Ignition residue,%          ≤ 0.01         0.03
氯化物(Cl)Chloride,%                              ≤ 0.002        0.005
硫化合物(以SO4計(jì))Sulfur compounds                 ≤ 0.005        0.015
鐵(Fe)Iron,%                                     ≤ 0.0002       0.0005
重金屬(以Pb計(jì))Heavy metals,%                      ≤ 0.005        0.0015
硫酸試驗(yàn)Substances darkened by sulfuric acid         合格         合格

ACS級
項(xiàng)目名稱Item                                     ACS Grade
含量Assay                                         ≥99.0%
熔點(diǎn)范圍Melting point                             158.0-161.0℃
灼燒殘?jiān)黂esidue after ignition                    ≤0.01%
氯化物(Cl)Chloride(Cl)                            ≤0.001%
硫酸鹽(SO4)Sulfate                                ≤0.003%
重金屬(以Pb計(jì))Heavy metals(as Pb)                 ≤5ppm
鐵(Fe)Iron(Fe)                                    ≤2ppm
硫酸變黑物Substances darkened by sulfuric acid    Passes test


品級Grade                               藥用級  
                                   (Ph. Eur., BP, USP)  
含量assay                              99.5-100.5% (calc. to the dried substance)
殘留溶劑residual solvents,             complies
重金屬heavy metals (as Pb)             ≤0.001%
相關(guān)物質(zhì)related subst.                 ≤0.2%  (HPLC)
灼燒殘?jiān)黫gn. residue                   ≤0.05% (as SO4)
干燥損失loss on drying                 ≤0.3%
熔點(diǎn)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
鑒別實(shí)驗(yàn)for identity                   complies 

Storage:
密封避光保存。
用途  測定鋁、硼、鈰、銅、鐵、鉛、錳、汞、銀、鈦、鎢、釩、次亞硫酸鹽,硝酸鹽和亞硝酸鹽。沉淀釷使釷從鈰及其他稀土元素中分離出來,分離鋯與鈦。熒光指示劑;防腐劑;絡(luò)合指示劑。
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