NILE CHEMICALS

ALIZARIN RED S

Structural formula

Alizarin red S

C.A.S No. 

130-22-3

C.I. number

58005

Appearance

Brownish Yellow Powder

Transition Range

pH 4.3 to pH 6.3

  Brilliant Yellow to Pink
 

pH 9.4 to pH 12

Solubility in 0.1% (dist water) Clear Solution
Absorptivity 1% 1 cm  
pH ( 6.3 ) Lamda Max 421.5 nm 150
pH ( 9.4 ) Lamda Max 525.5 nm 288

Loss on drying

3.58 %

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