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Sodium sulfate anhydrous

Cas:
7757-82-6
Molecular Structure:
MDL:
--MFCD00003504
Molecular Formula:
Na2SO4
Molecular Weight:
142.04
Alias:
无水芒硝,元明粉 Sodium sulfate exsiccated Sodium sulfate anhydrous
Product order:
Name Specifications Packing Price Delivery
Sodium sulfate anhydrous USP, EP, BP 500g RMB 418 Consulting service
Sodium sulfate anhydrous 农残级 500g RMB 528 Consulting service
Sodium sulfate anhydrous 农残级 100g RMB 160.6 Consulting service
Sodium sulfate anhydrous ACS 500g RMB 75.9 Consulting service
Sodium sulfate anhydrous 4N 25g RMB 93.5 Consulting service
Sodium sulfate anhydrous SP 25g RMB 93.5 Consulting service
Sodium sulfate anhydrous CP 500g RMB 27.5 Consulting service
Sodium sulfate anhydrous AR 500g RMB 52.8 Consulting service
Character:
白色颗粒性粉末,无气味,有苦咸味,无臭,无毒。易在潮湿空气中吸收三分子水。能溶于水和甘油,不溶于醇。3.6溶于份水。33℃时溶解度最大(1:2),温度再高溶解度降低,100℃时溶于2.4份水。
密度:2.7
熔点:880℃
沸点:1700℃
Quality Standard:
   
   GB/T 9853-88
项目Item                                  分析纯     化学纯
                                           (AR)       (CP)
含量(Na2SO4)Assay,%                    ≥  99.0       98.0
pH(50g/L溶液,25℃)pH                      5.0-8.0   5.0-8.0
of water solution
澄清度试验Clarity                          合格      合格
水不溶物Insoluble matter in water,%    ≤  0.005     0.02
灼烧失重Ignition loss,%                ≤  0.2       0.5
氯化物(Cl)Chloride,%                   ≤  0.001     0.005
总氮量(N)Total nitrogen,%             ≤  0.0005    0.001
磷酸盐(PO4)Phosphate,%                 ≤  0.001     0.002
钾(K)Potassium,%                       ≤  0.01       --
钙(Ca)Calcium,%                        ≤  0.002     0.005
铁(Fe)Iron,%                           ≤  0.0005    0.0015
重金属(以Pb计)Heavy metals,%           ≤  0.0005    0.002

ACS级
项目名称                                          ACS Grade
含量(Na2SO4)Assay                                   ≥99.0%
pH(5%溶液,25.0℃)pH of a 5% solution at 25.0℃      5.2-9.2
水不溶物Insoluble matter                            ≤0.001%
灼烧残渣Residue after ignition                      ≤0.5%
氯化物(Cl)Chloride(Cl)                              ≤0.001%
含氮化合物(以N计)Nitrogen compounds                 ≤5ppm
磷酸盐(PO4)Phosphate                                ≤0.001%
重金属(以Pb计)Heavy metals(as Pb)                   ≤5ppm
铁(Fe)Iron(Fe)                                      ≤0.001%
钙(Ca)Calcium                                       ≤0.01%
镁(Mg)Magnesium                                     ≤0.005%
钾(K)Potassium                                      ≤0.01%
萃取-浓缩的适应性实验Extraction-concentration
suitability                                         Passes test

USP, EP, BP 
ASSAY (DRIED BASIS) 99.0 - 100.5% 
ACIDITY / ALKALINITY TO PASS TEST 
LOSS ON DRYING -- 0.5% 
CHLORIDE (Cl) -- 0.02% 
HEAVY METALS (as Pb) -- 0.001% 

Storage:
密封干燥保存。
用途  医药上用作盐析剂、聚凝剂,也用于造纸、玻璃、印染、合成纤维、制革等工业。
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