Nomenclature
CAS number: 5153-24-2
Diacetatozirconic acid.
Description and references
Approx formula: Zr(OH)2(C2H3O2)2. Obtained as aq soln by
adding acetic acid to an aq slurry of carbonated hydrous zirconia:
Blumenthal, J. Chem. Educ. 39, 604 (1962). Toxicity data: Cochran et al., Arch. Ind. Hyg. Occup. Med. 1, 637 (1950).
Properties
Available as 22% ZrO2 soln. d 1.46. mp 7°. pH 3.8-4.2. Stable at room
temp. Also available as 13% ZrO2 soln. d 1.20. pH 3.3-4.0. Undergoes exchange
with anion exchange resins, but not with cation exchangers. Evaporation
of the solns under reduced pressure yields the solid compd. It is
resinous or glue-like in appearance and amorphous under x-rays. Its
properties indicate it to be a highly polymerized product. The powdered
solid readily dissolves when added slowly to rapidly swirling water.
On heating, the solns yield a solid hydrolyzate, which is a more
basic acetate with the compn ZrOOHC2H3O2. When the mixt is allowed to cool and stand at room temp,
this ppt slowly redissolves. LD50 in
rats: 4.1 g/kg orally; 300 mg/kg i.p. (Cochran).Use
Precipitating agent for gelatin and starch on textiles
and paper; water-repellent for textiles (especially in combination
with silicones).