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Lab Chemicals
Adsorption Indicators
ALIZARINE RED S
ALIZARINE RED S
C.I.No. 58005
Sodium Alizarine Sulphonate
Article No.
00860
Grade
Purity
CAS No.
130-22-3
Molecular Formula
C
1
4
H
7
NaO
7
S
Molecular Weight
342.3
H.S. Code
2914.7990
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
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
25 g
(00025)
100 g
(00100)
Specifications
Appearance
Yellow to orange to brown powder
Absorption maxima (λmax1)
592 - 599 nm (in 0.1 N NaOH)
Absorption maxima (λmax2)
554 to 558 nm (in 0.1 N NaOH)
Visual transition range
pH 3.5 (yellow) to pH 6.5 (pink), pH 9.4 (orange-brown) to pH 12.0 (violet)
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P302+P352-P305+P351+P338
Risk Statement: 36/37/38
Safety Statement: 26-36
Revision Date :
20-Jul-2023