7446-27-7 Usage
Description
Lead phosphate is white powder soluble in acids and alkalis. Lead (II) phosphate is insoluble
in water and alcohol but soluble in nitric acid and has fixed alkali hydroxides. On
heating, it decomposes and emits very toxic fumes containing Pb and POx.
Reports have indicated that on the basis of sufficient evidence of carcinogenicity in experimental
animals and inadequate evidence for the carcinogenicity in humans, lead acetate
and lead phosphate are reasonably anticipated to be human carcinogens. Information on
the toxicology profile of lead phosphate is limited.
Chemical Properties
Lead phosphate is a white powder or colorless
crystals.
Uses
Stabilizer for styrene and casein plastics; in special glasses.
General Description
White powder.
Air & Water Reactions
Insoluble in water, soluble in acids and alkalis.
Reactivity Profile
Salts, basic, such as LEAD (II) O-PHOSPHATE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.
Potential Exposure
Lead phosphate is used as a stabilizer
in styrene and casein plastics
Incompatibilities
Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates, chlorine,
bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases,
strong acids, oxoacids, epoxides, and active metals.
Check Digit Verification of cas no
The CAS Registry Mumber 7446-27-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 6 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7446-27:
(6*7)+(5*4)+(4*4)+(3*6)+(2*2)+(1*7)=107
107 % 10 = 7
So 7446-27-7 is a valid CAS Registry Number.
InChI:InChI=1/2H3O4P.3Pb.12H/c2*1-5(2,3)4;;;;;;;;;;;;;;;/h2*(H3,1,2,3,4);;;;;;;;;;;;;;;/q;;3*+2;;;;;;;;;;;;/p-6/r2H3O4P.3H4Pb/c2*1-5(2,3)4;;;/h2*(H3,1,2,3,4);3*1H4/q;;3*+2/p-6
