TIRON AR (3,5-PYROCATECHOL DISULPHONIC ACID DISODIUM SALT)

TIRON AR (3,5-PYROCATECHOL DISULPHONIC ACID DISODIUM SALT)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
T0206800025 AR 149-45-1 C6H4Na2O8S2 314.20 2908.9990
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

Water (by KF):

 4.5 - 6.5 %

Identity (UV/VIS spectrum):

 Passes test

Suitability (as indicator for metal titration):

 Passes test

Absorption maxima (buffer pH 2.5):

 290 - 291 nm

Specific absorptivity A 1%/1cm (lmax; 0.005%; buffer pH 2.5; calculated on dried substance):

 100 - 125

Safety Information and Hazard Symbols

Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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