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TIRON AR
Metal (pM) indicator (Yoe’s reagent or titanium and iron
indicator in the titration of iron with EDTA).
4,5-Dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
COAs
Packings
10 g
(00010)
25 g
(00025)
Print friendly version
Article No.
06315
Grade
AR
Purity
CAS No.
149-45-1
Molecular Formula
C
6
H
4
Na
2
O
8
S
2
Molecular Weight
314.20
H.S. Code
2908.9990
Shelf Life
60 Months
Physical Properties
Physical state at 20 °C
Solid
Colour
White to off white
Odour
Odorless
Melting point/ Freezing point [°C]
> 300 °C
Solubility in water [% weight]
Soluble in water
Specifications
Appearance
White to off -white powder
Identity (UV/VIS spectrum)
Passes test
Absorption maxima (buffer pH 2.5)
290 - 291 nm
Specific absorptivity A 1%/1cm (λmax; 0.005%; buffer pH 2.5; calculated on dried substance)
100 - 125
Water (by KF)
4.5 - 6.5 %
Suitability (as indicator for metal titration)
Passes test
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P302+P352-P305+P351+P338
Revision Date:
10-Apr-2025
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