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Chromotropic acid disodium salt dihydrate

Cas:
5808-22-0
Molecular Structure:
MDL:
--MFCD00150612
Molecular Formula:
C10H6Na2O8S2·2H2O;(HO)2C10H4(SO3Na)2·2H2O
Molecular Weight:
400.29
Alias:
变色酸二钠盐,1,8-二羟基萘-3,6-二磺酸钠,变色酸二钠 Disodium Chromotropate Dihydrate 1,8-Dihydroxynaphthalene-3,6-disulfonic acid disodium salt 4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt Chromogen C Chromotropic Acid Disodium Salt Mordant Brown 7
Product order:
Name Specifications Packing Price Delivery
Chromotropic acid disodium salt dihydrate AR 1kg RMB 2728 Consulting service
Chromotropic acid disodium salt dihydrate 98% 250g RMB 1317.8 促销
Chromotropic acid disodium salt dihydrate 98% 50g RMB 334.4 促销
Chromotropic acid disodium salt dihydrate ACS 25g RMB 206.8 现货
Chromotropic acid disodium salt dihydrate AR 25g RMB 96.8 现货
Character:
溶于水,溶液呈浅褐色。
熔点: 300 °C  
Quality Standard:
   
   Q/(HQ)SJ 673-95
项目Item                       分析纯    化学纯
                                    (AR)        (CP)
灵敏度Sensitivity                   合格       合格
水溶解试验Solubility in water       合格       合格
盐酸溶解试验Solubility in          
hydrochloric acid                   合格       合格
硫酸盐(SO4)Sulfate                 合格        --


项目                                                    ACS级
名称Item                                             (ACS Grade)
澄清度Clarity of solution                             passes test
对硝酸盐灵敏度试验Sensitivity to nitrate              passes test
对甲醛灵敏度试验Sensitivity to formaldehyde           passes test
草酸盐(C2O4)Oxalate                                   passes test
磷酸盐(PO4)Phosphate                                  ≤0.001%
硫酸盐(SO4)Sulfate                                    ≤0.002%
铁(Fe)Iron(Fe)                                        ≤3ppm
铅(Pb)Lead(Pb)                                        ≤2ppm
易炭化物Substances carbonizable by hot sulfuric acid  passes test


98%:


外观Appearance                              类白色至灰色或浅棕色粉末
红外光谱鉴别Infrared spectrometry           Conforms
含量assay                                   ≥98.0% (中和滴定)  
水中不溶物Insoluble matter in H2O           <0.02 %  
甲醛分析NO3 andformaldehyde-analysys test   passes
硫酸盐Sulfate                               ≤0.02%
水water                                     8-10%

Storage:

用途  用于Ag, ClO3- , Cr, Hg, NO2-, NO32-, Ti 测定,有机合成。
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