• 邻苯二甲酸氢钾 [877-24-7]

  • 英文名:Potassium hydrogen phthalate
  • 别名:1,2-苯二甲酸单钾盐 1,2-苯二甲酸氢钾 苯二甲酸氢钾 酞酸氢钾
  • CAS号:877-24-7 分子式:C8H5KO4 分子量:204.22
P63727-支 邻苯二甲酸氢钾 [877-24-7] 0.1MOL/L 支 28.00
P63729-25g 邻苯二甲酸氢钾 [877-24-7] 4N 25g 85.00
P63726-500g 邻苯二甲酸氢钾 [877-24-7] AR 500g 56.00 促销价:35.28
P63727-100g 邻苯二甲酸氢钾 [877-24-7] AR 100g 20.00 促销价:14.00
P63725-500g 邻苯二甲酸氢钾 [877-24-7] GR 500g 60.00 促销价:37.80
P63728-100g 邻苯二甲酸氢钾 [877-24-7] GR 100g 24.00 促销价:16.80
P63724-500g 邻苯二甲酸氢钾 [877-24-7] PT 500g 291.00 促销价:183.33
P63728-100g 邻苯二甲酸氢钾 [877-24-7] PT 100g 130.00 促销价:81.90
P63725-25g 邻苯二甲酸氢钾 [877-24-7] PT 25g 66.00 促销价:41.58
P63724-25g 邻苯二甲酸氢钾 [877-24-7] SP 25g 85.00
订货编号 商品名称 规格 包装 单价 促销价 会员价 数量
P63727-支 邻苯二甲酸氢钾 [877-24-7] 0.1MOL/L 28.00 28.00 登录可见
P63727-支 邻苯二甲酸氢钾 [877-24-7] 0.1MOL/L 支 28.00
P63729-25g 邻苯二甲酸氢钾 [877-24-7] 4N 25g 85.00 85.00 登录可见
P63729-25g 邻苯二甲酸氢钾 [877-24-7] 4N 25g 85.00
P63726-500g 邻苯二甲酸氢钾 [877-24-7] AR 500g 56.00 35.28 登录可见
P63726-500g 邻苯二甲酸氢钾 [877-24-7] AR 500g 56.00 促销价:35.28
P63727-100g 邻苯二甲酸氢钾 [877-24-7] AR 100g 20.00 14.00 登录可见
P63727-100g 邻苯二甲酸氢钾 [877-24-7] AR 100g 20.00 促销价:14.00
P63725-500g 邻苯二甲酸氢钾 [877-24-7] GR 500g 60.00 37.80 登录可见
P63725-500g 邻苯二甲酸氢钾 [877-24-7] GR 500g 60.00 促销价:37.80
P63728-100g 邻苯二甲酸氢钾 [877-24-7] GR 100g 24.00 16.80 登录可见
P63728-100g 邻苯二甲酸氢钾 [877-24-7] GR 100g 24.00 促销价:16.80
P63724-500g 邻苯二甲酸氢钾 [877-24-7] PT 500g 291.00 183.33 登录可见
P63724-500g 邻苯二甲酸氢钾 [877-24-7] PT 500g 291.00 促销价:183.33
P63728-100g 邻苯二甲酸氢钾 [877-24-7] PT 100g 130.00 81.90 登录可见
P63728-100g 邻苯二甲酸氢钾 [877-24-7] PT 100g 130.00 促销价:81.90
P63725-25g 邻苯二甲酸氢钾 [877-24-7] PT 25g 66.00 41.58 登录可见
P63725-25g 邻苯二甲酸氢钾 [877-24-7] PT 25g 66.00 促销价:41.58
P63724-25g 邻苯二甲酸氢钾 [877-24-7] SP 25g 85.00 85.00 登录可见
P63724-25g 邻苯二甲酸氢钾 [877-24-7] SP 25g 85.00
  •  订货编号
  •  商品名称
  •  规格
  •  包装
  •  单价
  •  促销价
  •  会员价
  •  数量

化学性质

白色结晶。约溶于12份冷水、3份沸水;微溶于乙醇。0.05M水溶液在25℃时的pH=4.005。 熔点 295-300 °C (dec.)(lit.) 密度 1.006 g/mL at 20 °C 溶解度 H2O: 100 mg/mL, clear, colorless 水溶解性 80 G/L (20 oC)

质量标准

  

GB/T1291-88
项目ltem                                               分析纯
                                                              (AR)
含量(C8H5KO4)Assay,%                   ≥ 99.8
pH(50g/L溶液,25℃)pH of water solution    3.8-4.2
澄清度试验Clarity                              合格
水不溶物lnsoluble matter in water,%    ≤ 0.005
干燥失重Drying loss,%                   ≤ 0.05
氯化物(Cl)Chloride,%                      ≤ 0.002
总氮量(N)Total nitrogen,%             ≤ 0.006
铵(NH4)Ammonium,%                   ≤ 0.005
钠(Na)Sodium,%                             ≤ 0.01
铁(Fe)Iron,%                                     ≤ 0.0005
重金属(Pb)Heavy metals,%            ≤ 0.0005


Q/(HG)SJ783-1999
项目ltem                                                化学纯
                                                               (CP)
含量(C8H5KO4)Assay,%                    ≥ 99.0
pH(50g/L溶液,25℃)pH of water solution    3.8-4.2
澄清度试验Clarity                              合格
水不溶物lnsoluble matter in water,%    ≤ 0.01
氯化物(Cl)Chloride,%                      ≤ 0.01
硫化合物(以SO4计)Sulfur cos,%    ≤ 0.0012
铵(NH4)Ammonium,%                    ≤ 0.01
钠(Na)Sodium,%                              ≤ 0.1
铁(Fe)Iron,%                                      ≤ 0.002
重金属(Pb)Heavy metals,%             ≤ 0.001


GB1257-89
项目ltem                                                     基准试剂
                                                                       (PT)
含量(C8H5KO4)Assay,%                         ≥ 99.90~100.05
pH(50g/L溶液,25℃)pH of water solution    3.8-4.1
澄清度试验Clarity                                       合格
水不溶物lnsoluble matter in water,%    ≤ 0.003
氯化物(Cl)Chloride,%                               ≤ 0.002
硫化合物(以SO4计) ,%                             ≤ 0.006
钠(Na)Sodium,%                                        ≤ 0.005
铁(Fe)Iron,%                                               ≤ 0.0005
重金属(Pb)Heavy metals,%                    ≤ 0.0005


ACS级
项目名称                                               ACS Grade
含量(C8H5KO4,干基)Assay                99.95-100.05%
pH(5%溶液,25.0±0.2℃)
pH(5% solution at 25.0±0.2℃)         4.00-4.02
水不溶物Insoluble matter                   ≤0.005%
氯化合物(Cl)Chloride compounds   ≤0.003%
硫化合物(以SO4计)Sulfur compoun ≤0.002%
重金属(以Pb计)Heavy metals             ≤ 5ppm
铁(Fe)Iron                                              ≤5ppm
钠(Na)Sodium                                      ≤0.005%


品级Grade                               色谱纯  
                                     (grade for HPLC )
含量assay                             ≥99.8% (T)
pH                                    3.5-5.0
熔点mp                                295-300 °C (dec.)  
水溶解试验solubility H2O:             soluble100 mg/mL, 无色透明
λ 10 % in H2O
UV absorption
  λ: 330 nm A:                        ≤0.05
  λ: 340 nm A:                        ≤0.03
  λ: 350 nm A:                        ≤0.02
  λ: 500 nm A:                        ≤0.02


99.99% metals basis:


外观Appearance                          White Powder
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                      Confirms K component
总痕量金属杂质total metallic impurities   ≤200ppm by ICP Atomic emission

  

危险性质

危险品标志  Xi,C
WGK Germany  1
RTECS号 CZ4326000
F  34
危险类别码  36/38-36/37/38-34
安全说明  26-36-24/25-22-45-36/37/39

  

用途及存储

  1. 用途  用作pH测定的缓冲剂、分析基准物质。
  2. 用途  用作分析试剂和缓冲剂,用作烟火鸣叫剂
  密封干燥保存。