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Sodium tetraborate decahydrate

Cas:
1303-96-4
Molecular Structure:
MDL:
--MFCD00149193
Molecular Formula:
Na2B4O7·10H2O
Molecular Weight:
381.37
Alias:
硼砂,四硼酸鈉(十水),黃月砂,硼砂(藥用),月石砂,四硼酸鈉 Borax decahydrate Sodium borate decahydrate
Product order:
Name Specifications Packing Price Delivery
Sodium tetraborate decahydrate ACS 500g RMB 38.5 現(xiàn)貨
Sodium tetraborate decahydrate AR 500g RMB 27.5 現(xiàn)貨
Character:
無色半透明的結(jié)晶或白色結(jié)晶性粉末,易溶于熱水及甘油,不溶于醇,有風(fēng)化性。水溶液對石蕊和酚酞呈堿性反應(yīng)。水溶液顯鈉鹽與硼酸鹽的鑒別反應(yīng)。在空氣中易吸水,形成部分水合物,并變成不透明。緩慢溶于水。
密度:1.73
熔點:75℃
Quality Standard:
   
   GB/T 632-93
項目Item                               優(yōu)級純     分析純    化學(xué)純
                                        (GR)       (AR)      (CP)
含量(Na2B4O7·10H2O)Assay,%            ≥99.5       99.5      99.0
澄清度試驗Clarity                       合格       合格      合格
鹽酸不溶物Insiluble matter
in hydrochloric,%                     ≤0.003     0.005      0.02  
氯化物(Cl)Chloride,%                  ≤0.0005    0.002      0.005
硫酸鹽(SO4)Sulfate ,%                 ≤0.005     0.01       0.015
磷酸鹽(PO4)Phosphate,%                ≤0.001     0.002      0.005
鈣(Ca)Calcium,%                       ≤0.001     0.005      0.02
鐵(Fe)Iron,%                          ≤0.0001    0.0003     0.0005
銅(Cu)Copper,%                        ≤0.0005    0.001      0.002
鉛(Pb)Lead,%                          ≤0.0005    0.001      0.002


ACS級
項目名稱                                        ACS Grade
含量(Na2B4O7·10H2O)Assay                       99.5-105.0%
pH(0.01M,25.0℃).pH of a 0.01M solution         9.15-9.21(25.0℃)
水不溶物Insoluble matter                        ≤0.005%
氯化物(Cl)Chloride                              ≤0.001%
磷酸鹽(PO4)Phosphate                            ≤0.001%
硫酸鹽(SO4)Sulfate                              ≤0.005%
鈣(Ca)Calcium                                   ≤0.005%
重金屬(以Pb計)Heavy metals                      ≤0.001%
鐵(Fe)Iron                                      ≤5ppm

基準(zhǔn)試劑PT
純度Assay:                                   99.95-100.05%
            

Storage:
密封保存。
用途  色層分析試劑,緩沖劑,金屬助熔劑。
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