ALIZARINE RED S AR

C.I.No. 58005 Acid base indicator use in analysis of metals
Sodium Alizarine Sulphonate

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Article No.
00861
Grade
AR
Purity
CAS No.
130-22-3
Molecular Formula
C14H7NaO7S
Molecular Weight
342.3
H.S. Code
2914.7990
Shelf Life
60 Months
MSDS
 

 

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

Packings

  • 1PB1200060

    25 g (00025)

  • 1PB1200200

    100 g (00100)

 

Specifications

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 (0.1 mol/L in NaOH) λmax1 553-559 nm
Absorption maxima (0.1 mol/L in NaOH) λmax2 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

Exclamation Mark
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
Revision Date : 21-Jan-2021
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