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Methyl orange

Cas:
547-58-0
Molecular Structure:
MDL:
--MFCD00007502
Molecular Formula:
C14H14N3NaO3S
Molecular Weight:
327.33
Alias:
金莲橙D,对二甲基氨基偶氮苯磺酸钠
Product order:
Name Specifications Packing Price Delivery
Methyl orange ACS reagent,85 % 500g RMB 1265 Consulting service
Methyl orange ACS reagent,85 % 100g RMB 308 Consulting service
Methyl orange ACS reagent,85 % 25g RMB 132 Consulting service
Methyl orange IND 25g RMB 55 Consulting service
Character:
橙黄色片状结晶或结晶性粉末,溶于水,不溶于醇。1份溶于500份水中。易溶于热水,溶液呈金黄色,几乎不溶于乙醇。最大吸收波长505nm。有毒。Colour Index Number 13025
Quality Standard:
    
质量标准   
   Q/(HG)SJ 668-95
项目Item                                  指示剂
                        (Ind)
含量(以硫酸钠计)Assay,%                ≥18.5~22.0
pH变色域Visnal transition interval     3.0(红)~4.4(黄)
灵敏度Sensitivity                          合格
水不溶物Insoluble matter in water,%    ≤0.15
氧化物Oxide                 合格

品级Grade                                  ACS级
                                 (ACS reagent, Dye content 85 %)
外观Appearance                            橙色粉末
红外光谱鉴别Infrared spectrometry         Conforms
染料含量Dye content                       ≥85.0%
澄清度试验Claroty of solution             合格
pH变色域 Visnal transition interva        3.2(红)-4.4(黄)
Visual Interval                           PH 3.0 = Pink or Red
Visual Interval                           pH 3.2 = Pinkish-Orange
Visual Interval                           pH 4.4 = Yellow
紫外吸收UV absorption                     λmax 505 nm

Storage:
贮存  密封保存。
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