Phosphotungstic Acid 69% ACS

£16.96 to £108.85

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Variation ID		Product Code	Pack Size	List Price
6435	photo_camera	RRBD65-U	10g RRBD65-U	£16.96
6436	photo_camera	RRBD65-W	25g RRBD65-W	£33.98
6437	photo_camera	RRBD65-2W	50g RRBD65-2W	£60.47
6438	photo_camera	RRBD65-X	100g RRBD65-X	£108.85

Phosphotungstic acid is used in histology as a component for staining of cell specimens, often together with haematoxylin as PTAH. It binds to fibrin, collagen, and fibres of connective tissues, and replaces the anions of dyes from these materials, selectively decoloring them.Phosphotungstic acid is electron dense, opaque for electrons. It is a common negative stain for viruses, nerves, polysaccharides, and other biological tissue materials for imaging by a transmission electron microscope.

Laboratory Chemical
Negative Stain for viruses
Component of Biological Stains

Minimum Assay 69%
Molecular Formula H3PO4 x (WO3)12 x H2O
Molecular Weight 2880.05 g/mol
Melting Point ~95 °C
Insoluble Matter: Complies
Chloride (Cl): <0.30%
Nitrate (NO3): <0.10%
Sulphate (SO4): <0.020%
Ammonia (NH3): <0.2%
Iron (Fe): <0.002%
Heavy Metals (as Pb): <0.005%
Copper (Cu): <0.00012%
Potassium (K): <0.0048%