酚酞 [77-09-8]
-
英文名:Phenolphthalein
- 别名:酚麸酞,酚麸,3,3-双(4-羟基苯基)-1(3H)-异苯并呋喃酮
- CAS号:77-09-8 分子式:C20H14O4 分子量:318.33
P164608-100ml 酚酞 [77-09-8] 16g/L in Ethanol 100ml 131.00 促销价:82.53
P164605-500g 酚酞 [77-09-8] AR 500g 175.00 促销价:122.50
P164607-100g 酚酞 [77-09-8] AR 100g 70.00 促销价:49.00
P164607-25g 酚酞 [77-09-8] AR 25g 38.00 促销价:26.60
P164608-5g 酚酞 [77-09-8] AR 5g 25.00 促销价:17.50
P164607-25g 酚酞 [77-09-8] IND 25g 36.00
P164609-500g 酚酞 [77-09-8] Ph Eur., BP, 98-101% 500g 425.00 促销价:178.50
P164605-100g 酚酞 [77-09-8] Ph Eur., BP, 98-101% 100g 105.00
订货编号 | 商品名称 | 规格 | 包装 | 单价 | 促销价 | 会员价 | 数量 |
P164607-500ml | 酚酞 [77-09-8] | 16g/L in Ethanol | 500ml | 330.00 | 207.90 | 登录可见 |
P164607-500ml 酚酞 [77-09-8] 16g/L in Ethanol 500ml 330.00 促销价:207.90
|
P164608-100ml | 酚酞 [77-09-8] | 16g/L in Ethanol | 100ml | 131.00 | 82.53 | 登录可见 |
P164608-100ml 酚酞 [77-09-8] 16g/L in Ethanol 100ml 131.00 促销价:82.53
|
P164605-500g | 酚酞 [77-09-8] | AR | 500g | 175.00 | 122.50 | 登录可见 |
P164605-500g 酚酞 [77-09-8] AR 500g 175.00 促销价:122.50
|
P164607-100g | 酚酞 [77-09-8] | AR | 100g | 70.00 | 49.00 | 登录可见 |
P164607-100g 酚酞 [77-09-8] AR 100g 70.00 促销价:49.00
|
P164607-25g | 酚酞 [77-09-8] | AR | 25g | 38.00 | 26.60 | 登录可见 |
P164607-25g 酚酞 [77-09-8] AR 25g 38.00 促销价:26.60
|
P164608-5g | 酚酞 [77-09-8] | AR | 5g | 25.00 | 17.50 | 登录可见 |
P164608-5g 酚酞 [77-09-8] AR 5g 25.00 促销价:17.50
|
P164607-25g | 酚酞 [77-09-8] | IND | 25g | 36.00 | 36.00 | 登录可见 |
P164607-25g 酚酞 [77-09-8] IND 25g 36.00
|
P164609-500g | 酚酞 [77-09-8] | Ph Eur., BP, 98-101% | 500g | 425.00 | 178.50 | 登录可见 |
P164609-500g 酚酞 [77-09-8] Ph Eur., BP, 98-101% 500g 425.00 促销价:178.50
|
P164605-100g | 酚酞 [77-09-8] | Ph Eur., BP, 98-101% | 100g | 105.00 | 105.00 | 登录可见 |
P164605-100g 酚酞 [77-09-8] Ph Eur., BP, 98-101% 100g 105.00
|
化学性质
质量标准
GB/T 10729-89
项目Item 指示剂
(pH indicator )
pH变色域Visualtransition interval 8.0(黄色)-10.0(紫红色)
质量吸收系数Mass absorptivity,α(L/cm.g) 68.0-75.0
乙醇溶解试验Solubility in ethanol 合格
干燥失重Drying loss,% <1.0
灼烧残渣(以硫酸盐计)Ignition residue,% ≤0.05
98%:
外观Appearance 白色至类白色粉末
红外光谱鉴别Infrared spectrometry 和对照匹配
纯度Purity(HPLC) ≥98.0%
熔点Melting point 258°C - 263°C
pH变色域Transition interval(pH) (colorless)7.8 - 10.0(ponoeau)
干燥损失Loss on drying <0.5 % (105°C)
氯Chloride(Cl) <100 ppm
硫酸根Sulfate(SO4) <200 ppm
重金属Heavy metals (as Pb) <10 ppm
硫酸盐灰分Sulfated ash <0.1 %
品级Grade 药用级
(Ph Eur., BP, 98-101% )
含量assay(以干基计) 98-101% (T)
熔点Melting point 261°C - 263°C
重金属heavy metals ≤0.001% (as Pb)
灼烧残渣ign. residue ≤0.1% (as SO4)
干燥损失loss on drying ≤0.5% , 105 °C
氯chloride (Cl-): ≤100 mg/kg
硫酸根sulfate (SO42-): ≤200 mg/kg
危险性质
用途及存储
酸碱指示剂, 非水溶液滴定指示剂, 色谱分析试剂。
密封干燥保存。