Zirconium silicate

Agent Name
Zirconium silicate
CAS Number
10101-52-7
Formula
H4-O4-Si.Zr
Major Category
Metals
Zirconium silicate formula graphical representation
Synonyms
Zircon; A-PAX-SA; Excelopax; MZ 1000B; Micro-Pax; Micro-Pax 20A; Micro-Pax SP; Oscal 1224; Silicon zirconium oxide (SiZrO4); Tam 418; Zircon 30MY; Zirconium orthosilicate (ZrSiO4); Zirconium silicon oxide (ZrSiO4); Zircosil; Zircosil 1; Silicic acid, zirconium(4+) salt; Silicic acid (H4SiO4), zirconium(4+) salt (1:1); [ChemIDplus] Zirconium (IV) silicate; [MSDSonline]
Category
Metals, Inorganic Compounds
Description
Colorless solid; [Merck Index] Grey powder; [MSDSonline]
Sources/Uses
Used in refractories, ceramics, glazes, cements, coatings for casting molds, polishing materials, gemstones, and cosmetics; Also used as a catalyst and silicone rubber stabilizer; [Merck Index] Occurs in nature as the mineral zircon; Used as a refractory, abrasive, and to make ceramic glazes and enamels; Also used in the steel and glass industries and in foundries to make molds; [Ullmann]
Comments
An irritant; "Prolonged inhalation may cause pulmonary fibrosis known as silicosis." [MSDSonline] "Silicosis is caused by inhalation of dust containing particles of crystalline silica in the respirable size range." Some non-crystalline forms of silica are relatively nontoxic. [APHA, p. 446] See "Zirconium."
Biomedical References

Exposure Assessment

TLV (ACGIH)
5 mg/m3, as Zr
STEL (ACGIH)
10 mg/m3, as Zr
PEL (OSHA)
5 mg/m3, as Zr (compounds)
MAK
1 mg/m3, inhalable fraction (metal and insol. cmpds.)
IDLH (NIOSH)
25 mg/m3, as Zr

Diseases, Processes, and Activities Linked to This Agent

Processes
Activities

Activities with risk of exposure: