TIRON
TIRON AR
Metal (pM) indicator (Yoe’s reagent or titanium and iron
indicator in the titration of iron with EDTA).
indicator in the titration of iron with EDTA).
Short Name: TIRON
Synonym: 4,5-Dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate
Basic Details
Article No.
LG102396
Grade
AR
Purity
CAS No.
149-45-1
HS Code
2908.9990
Shelf Life
60 Months
Packings Avialable
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
Chemical 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 & Hazard Symbols
Symbol
GHS07
Signal Word
Warning
Hazardous Statement
H315-H319-H335
Precaution Statement
P261-P305 + P351 + P338