Description
| CAS | 149-45-1 |
| Molecular Formula | C6H4Na2O8S2 |
| Molecular Weight | 314.20 |
| 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/brown/grey/beige powder. | Identity (Uv/Vis Spectrum) | 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 |
| Water (By Kf) | 4.5 – 6.5 % | Suitability (As Indicator For Metal Titration) | Passes test |
| Dangerous Goods Information | |||
| UN Number | – | DG Class | – |
| Safety Information & Hazard Symbols | |
| Symbol | GHS07 |
| Signal Word | Warning |
| Hazard Statement | H315-H319-H335 |
| Precaution Statement | P261-P305 + P351 + P338 |















