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Contact SupplierAppearance | A white to off white powder |
pH range (8.2 - 10.0) | Colourless to red-violet |
Absorption maxima (buffer pH 9.8) | 551 - 554 nm |
Sensitivity | Passes test |
Sulphated ash | Max 0.05% |
Chloride (Cl) | Max 0.01% |
Sulphate (SO4) | Max 0.01% |
Loss on drying (at 110°C) | Max 1% |