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Sodium carbonate anhydrous

Cas:
497-19-8
Molecular Structure:
MDL:
--MFCD00003494
Molecular Formula:
Na2CO3
Molecular Weight:
105.99
Alias:
碳酸钠,纯碱,苏打,食用纯碱 Carbonic acid, disodium salt Soda Soda ash sodium carbonate
Product order:
Name Specifications Packing Price Delivery
Sodium carbonate anhydrous ACS 500g RMB 41.8 Consulting service
Sodium carbonate anhydrous SP 25g RMB 107.8 Consulting service
Sodium carbonate anhydrous AR 500g RMB 30.8 Consulting service
Character:
白色粉末,无气味。有碱味。有吸湿性。露置空气中逐渐吸收 1mol/L水分(约15%)。400℃时开始失去二氧化碳。遇酸分解并泡腾。溶于水(室温时3.5份,35℃时2.2份)和甘油,不溶于醇。水溶液呈强碱性,pH11.6。半数致死量(30日)(小鼠中,腹腔)116.6mg/kg。有刺激性。
密度:2.53
熔点:851℃
沸点:1600℃
Quality Standard:
 
   GB/T 639-86                            
项目Item                               优级纯   分析纯    化学纯
                                        (GR)     (AR)     (CP)
含量(Na2CO3)Assay,%                   ≥99.8     99.8      99.8
澄清度试验Clarity                       合格     合格      合格
水不溶物Insoluble matter in water,%   ≤0.005    0.01      0.02
干燥失重(300℃)Drying loss,%          ≤0.5      1.0       1.0  
氯化物(Cl)Chloride,%                  ≤0.001    0.002     0.005
硫化合物(以SO4计)Sulfate compounds,%  ≤0.003    0.005     0.01
氮化合物(N)Nitrogen compounds,%       ≤0.001    0.001     0.002
磷酸盐及硅酸盐(以SiO3计)              ≤0.0025   0.006     0.013
Phosphate and Silicate,%
镁(Mg)Magnesium,%                     ≤0.0005   0.002     0.005
铝(Al)Aluminum,%                     ≤0.001    0.003     0.01
钾(K)Potassium,%                     ≤0.005    0.005     0.002
钙(Ca)Calcium,%                       ≤0.005    0.01      0.02
铁(Fe)Iron,%                          ≤0.0003   0.0005    0.001
重金属(以Pb计)Heavy metals,%          ≤0.0005   0.0005    0.001

GB 1255-90
项目Item                                 基准试剂
                                           (PT)
含量(Na2CO3)Assay,%                     99.5-100.05
澄清度试验Clarity                          合格  
灼烧失重Ignition loss,%                  ≤0.5
氯化物(Cl)Chloride,%                     ≤0.001
硫化合物(以SO4计)Sulfate compounds,%     ≤0.003
总氮量(N)Total nitrogen,%                ≤0.001
磷酸盐及硅酸盐(以SiO3计)                 ≤0.0025
Phosphate and Silicate,%
镁(Mg)Magnesium,%                        ≤0.0005
铝(Al)Aluminum,%                        ≤0.001
钾(K)Potassium,%                        ≤0.005
钙(Ca)Calcium,%                          ≤0.01
铁(Fe)Iron,%                             ≤0.0003
重金属(以Pb计)Heavy metals,%             ≤0.0005      

ACS级
项目名称                                ACS Grade
含量(干基)Assay                          ≥99.5%
水不溶物Insoluble matter                 ≤0.01%
干燥失重(285℃)Loss on drying at 285℃ ≤1.0%
氯化物(Cl)Chloride                       ≤0.001%
磷酸盐(PO4)Phosphate                     ≤0.001%
硅酸盐(以SiO2计)Silica                  ≤0.005%
硫化合物(以SO4计)Sulfur compounds        ≤0.003%
重金属(以Pb计)Heavy metals               ≤5ppm
铁(Fe)Iron                               ≤5ppm
钙(Ca)Calcium                            ≤0.03%
镁(Mg)Magnesium                          ≤0.005%
钾(K)Potassium                           ≤0.005%

Storage:
密封干燥保存。
用途  定量分析中标定酸液的基准物质,测定铝、硫、铜、铅和锌。检验尿液和全血葡萄糖,分析水泥中二氧化硅的助熔剂,金属金相分析等。 纯碱是国民经济中的重要基本化工原料之一。 广泛用于化学工业本身及冶金、国防、医药、石油、制革、纺织、印染、食品、照相、玻璃、搪瓷、毛麻和造纸等行业。还用于水的净化,及日常生活。
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