GB/T1291-88
項目ltem                                               分析純
                                                              (AR)
含量(C₈H₅KO₄)Assay,%                   ≥ 99.8
pH(50g/L溶液,25℃)pH of water solution    3.8-4.2
澄清度試驗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
總氮量(N)Total nitrogen,%             ≤ 0.006
銨(NH₄)Ammonium,%                   ≤ 0.005
鈉(Na)Sodium,%                             ≤ 0.01
鐵(Fe)Iron,%                                     ≤ 0.0005
重金屬(Pb)Heavy metals,%            ≤ 0.0005


Q/(HG)SJ783-1999
項目ltem                                                化學純
                                                               (CP)
含量(C₈H₅KO₄)Assay,%                    ≥ 99.0
pH(50g/L溶液,25℃)pH of water solution    3.8-4.2
澄清度試驗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計)Sulfur cos,%    ≤ 0.0012
銨(NH₄)Ammonium,%                    ≤ 0.01
鈉(Na)Sodium,%                              ≤ 0.1
鐵(Fe)Iron,%                                      ≤ 0.002
重金屬(Pb)Heavy metals,%             ≤ 0.001


GB1257-89
項目ltem                                                     基準試劑
                                                                       (PT)
含量(C₈H₅KO₄)Assay,%                         ≥ 99.90～100.05
pH(50g/L溶液,25℃)pH of water solution    3.8-4.1
澄清度試驗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計) ,%                             ≤ 0.006
鈉(Na)Sodium,%                                        ≤ 0.005
鐵(Fe)Iron,%                                               ≤ 0.0005
重金屬(Pb)Heavy metals,%                    ≤ 0.0005


ACS級
項目名稱　                                              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計)Sulfur compoun ≤0.002%
重金屬(以Pb計)Heavy metals             ≤ 5ppm
鐵(Fe)Iron                                              ≤5ppm
鈉(Na)Sodium                                      ≤0.005%


品級Grade                               色譜純  
                                     (grade for HPLC )
含量assay                             ≥99.8% (T)
pH                                    3.5-5.0
熔點mp                                295-300 °C (dec.)  
水溶解試驗solubility H2O:             soluble100 mg/mL, 無色透明
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:


外觀Appearance                          White Powder
X-射線衍射分析X-Ray Diffraction         Conforms to Structure
純度Purity                              ≥99.99% Based on Trace Metals Impurities
ICP Major Analysis                      Confirms K component
總痕量金屬雜質total metallic impurities   ≤200ppm by ICP Atomic emission

危險品標志  Xi,C
WGK Germany  1
RTECS號 CZ4326000
F  34
危險類別碼  36/38-36/37/38-34
安全說明  26-36-24/25-22-45-36/37/39

1. 用途  用作pH測定的緩沖劑、分析基準物質。
2. 用途  用作分析試劑和緩沖劑，用作煙火鳴叫劑