Home > Pallav Chemicals > Adsorption Indicators > Alizarin Red S AR (pH Indicator)

Alizarin Red S AR (pH Indicator)
C.I.No. 58005 Acid base indicator use in analysis of metals Sodium Alizarine Sulphonate

Product Code.
00101
Grade
Purity
CAS No.
130-22-3
Molecular Formula
C14H7NaO7S
Molecular Weight
342.30
H.S.Code
2914.79900
Shelf Life
60 Months

Physical Properties

Physical state at 20 °C
Solid
Colour
Red powder
Melting point/ Freezing point [°C]
430°C
Boiling point [°C]
287 - 289°C
Initial boiling point [°C]
287°C
Final boiling point [°C]
289°C
Solubility in water [% weight]
Sparingly soluble in water

Packaging

Specification

Appearance
Red powder
Dye content
Min 70.0%
Transition range
pH 4.3-6.3
Yellow-Pink
pH 9.4-12.0
Brown orange-Violet
Solubility (0.1% in water)
Clear solution
Absorption maxima in 0.1 N NaOH
553-559 nm
Absorption maxima in 0.1 N NaOH
592-599 nm
Absorptivity (A1%/1cm at 556 nm )
Min 350.0
Absorptivity (A1%/1cm at 595 nm )
Min 325.0
Loss on drying (at 110°C)
Max 5.0%

Safety Information and Hazard Symbols

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338