S P E C I F I C A T I O N S

PYROGALLOL ACS

Synonyms:				1,2,3-Benzenetriol; 1,2,3-Trihydroxybenzen;  1,2,3-						Trihydroxybenzene, Pyrogallic acid

CAS No.					87-66-1

Chemical Formula				C6H3(OH)3  

Formula Weight				126.11

Description:					White powder; may become grayish on
						Exposure to air and light

Assay						99.8% minimum
         
Melting Point				131.0 °C to 135.0 °C  
                
Residue after Ignition			0.005% maximum

Chloride (Cl)				0.001% maximum

Sulfate   (SO4)				0.005% maximum

Heavy metals (as Pb)			5 ppm   maximum

Iron (Fe)					0.001% maximum
Boiling Point				309 °C

Label Precautions				Air & Light sensitive

Effective: 12/29/08