订购电话:4001650900

Sodium thiosulfate pentahydrate

Molecular Structure:
MDL:
--MFCD00149186
Molecular Formula:
H10Na2O8S2;Na2S2O3·5H2O
Molecular Weight:
248.19
Alias:
硫代硫酸钠五水合物,脱氯剂,五水合硫代硫酸钠,大苏打Sodium thiosulfate Sodium hyposulfite
Product order:
Name Specifications Packing Price Delivery
Sodium thiosulfate pentahydrate USP, EP, BP, JP 500g RMB 459.8 Consulting service
Sodium thiosulfate pentahydrate GCS 5g RMB 73.7 Consulting service
Sodium thiosulfate pentahydrate 99.99% 100g RMB 1240.8 Consulting service
Sodium thiosulfate pentahydrate 99.99% 25g RMB 418 Consulting service
Sodium thiosulfate pentahydrate ACS 500g RMB 49.5 Consulting service
Sodium thiosulfate pentahydrate PT 100g RMB 93.5 Consulting service
Sodium thiosulfate pentahydrate GR 500g RMB 50.6 Consulting service
Sodium thiosulfate pentahydrate AR 500g RMB 38.5 Consulting service
Character:
物色透明的单斜晶体。溶与水和松节油,难溶于乙醇。在33℃以上的干燥空气中风化,在48℃分解,灼烧则分解为硫化钠和硫酸钠。无水物的密度为1.667。水溶液呈弱碱性反应。遇强酸分解并析出硫和二氧化硫。
密度:1.72
沸点:48.5 °C

Quality Standard:
 
   GB/T 637-88
项目Item                       优级纯     分析纯      化学纯
                                          (GR)      (AR)         (CP)
含量(Na2S2O3.5H2O)Assay,%               ≥99.5      99.0        98.0
pH(50g/L溶液,25℃)pH of                  
water solution                           6.0-7.5   6.0-7.5      6.0-7.5
澄清度试验Clarity                     合格     合格       合格
水不溶物lnsoluble matter    
in water,%                             ≤0.002     0.005      0.01
氯化物(Cl)Chloride,%                   ≤0.02      0.02        --
硫酸盐及亚硫酸盐(以SO4计)Sulfate
and sulfite,%                        ≤0.04      0.05       0.01
总氮量(N)Total nitrogen,%            ≤0.002     0.005       -- 
钾(K)Potassium,%                ≤0.001         --        --
镁(Mg)Magnesium,%                      ≤0.001       0.001       --
铁(Fe)Iron,%                      ≤0.0005      0.0005     0.001  
钙(Ca)Calcium,%                        ≤0.003       0.003      0.005
重金属(以Pb计)Heavy metals,%           ≤0.0005      0.0005     0.001

ACS级
项目名称                                           ACS Grade
含量(Na2S2O3·5H2O)Assay                            99.5-101.0%
pH(5%溶液,25.0℃)..pH of a 5% solution at 25.0℃    6.0-8.4
水不溶物Insoluble matter                            ≤0.005%
氮化合物(以N计)Nitrogen compounds                   ≤0.002%
硫化物(以S计)Sulfide(S)                             Passes test


99.99%:

外观Appearance                          白色粉末
纯度Purity                              ≥99.99% Based On Trace Metals Analysis
S2O3                                    69.8% - 72.0%(碘量滴定)
ICP Assay                               Confirms Sodium component
痕量金属杂质Trace Metal Analysis        100ppm by ICP Atomic emission

 USP, EP, BP, JP 级
ASSAY (ANHYDROUS BASIS) 99.0 - 100.5% 
WATER 32.0 - 37.0% 
pH OF A 10% SOLUTION 6.0 - 8.0 
CALCIUM (Ca) TO PASS TEST 
HEAVY METALS (as Pb) -- 10 PPM 
SULFATE AND SULFITE (as SO4) -- 0.2% 
SULFIDE (S) TO PASS TEST 
COLOR AND CLARITY TO PASS TEST 
ARSENIC (As) -- 5 PPM 

Storage:
密封阴凉干燥保存。
用途  色层分析试剂,点滴分析测定钴、照相定影剂,除氯剂容量分析常用试剂,测定血钠,制备注射液及双糖铁尿素培养基,媒染剂。
Related Products
上海紫一试剂厂   © 2024 All Rights Reserved      备案号:沪ICP备19037119号-1     
网站地图:
试剂CAS试剂分类试剂产品实验仪器耗材分类实验仪器耗材新闻资讯
   沪公网安备 31012002003055号