CAS 14979-11-4; 4,5-二羟基-3,6-双[(4-甲基-2-磺基苯基)偶氮]-2,7-萘磺酸; 7-Naphthalenesulfonic acid, 4,5-dihydroxy-3,6-bis[(4-methyl-2-sulfophenyl)azo]-2

CAS:

14979-11-4

分子式:

C₂₄H₂₀N₄O₁₄S₄

分子量:

716.680

中文名称:

4,5-二羟基-3,6-双[(4-甲基-2-磺基苯基)偶氮]-2,7-萘磺酸

二甲基偶氮磺IIIDAL

磺酰苯胺二甲基偶氮磺III

英文名称:

7-Naphthalenesulfonic acid, 4,5-dihydroxy-3,6-bis[(4-methyl-2-sulfophenyl)azo]-2

Dimethylsulfonazo III DAL

dimethylsulfonazo

2,7-Naphthalenesulfonic acid,4,5-dihydroxy-3,6-bis[(4-methyl-2-sulfophenyl)azo]-

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货号

品牌

产品名称

规格

包装、参考价格

D870741

MACKLIN

二甲基偶氮磺III

98%

198元/200mg; 334元/1g;

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储存：室温
状态：黄色到深绿色到黑色粉末到晶体

A5008

TCI

Dimethylsulfonazo III [Spectrophotometric reagent for alkaline earth metals and indicator for the precipitation titration of SO₄ with Ba]

495元/1G; 1600元/5G;

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基本信息

技术规格

Appearance	Yellow to Dark green to Black powder to crystal
Lambda max.	570.0 to 580.0 nm(H2O)
Absorbance(E1%1cm)	min. 400(H2O, 570.0 to 580.0 nm)
Drying loss	max. 15.0 %
Ignition residue(Sulfate)	max. 7.0 %(after drying)
Sensitiveness	Turn Purplish Blue with Barium perchlorate aq and Turn Purple by adding Potassium sulfate aq

物性(参考值)

最大吸收波长

575(H2O) nm