• Zircon Flour / Zircon Sand Synonyms:

Zircon flour / zircon sand, zirconium silicate, zirconium orthosilicate, ZrSiO4, hyacinth, (silicic acid, zirconium (4+) salt), zircon, zirconium silicon oxide, CAS # 10101-52-7

• Zircon Flour / Zircon Sand Designations:

Chemical Name: Zirconium silicate

Chemical Formula: ZrSiO4

• Zircon Flour / Zircon Sand General Description:

1.  A coarse or fine white mineral powder that is naturally occuring, chemically inert and stable to very high temperatures. Insoluble in water, dilute acids and hot concentrate sulfuric acid.
2. Zircon is a mineral belonging to the group of nesosilicates. Its chemical name is zirconium silicate and its corresponding chemical formula is ZrSiO4. Hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal class. The natural color of zircon varies between colorless, yellow-golden, red, brown, and green. Colorless specimens that show gem quality are a popular substitute for diamond; these specimens are also known as "Matura diamond". It is not to be confused with cubic zirconia, a synthetic substance with a completely different chemical composition.    

• Zircon Flour / Zircon Sand Typical Chemical Purities Available:

ZrO2= 66.0%, SiO2= 32.0%

• Zircon Flour / Zircon Sand & Bead Typical Granulations Usually Available:

a) -40 + 200 mesh

b) 200 mesh and finer

c) 325 mesh and finer

d) 400 mesh and finer

e) 600 mesh and finer

f) Between 0.7 and 2.4 mm bead granulations

• Zircon Flour / Zircon Sand Nominal Physical Constants: 

Molecular Weight (g/mol.)	183.1
Bulk Density (lbs./ft.3)	115-130 & 170-180
Specific Gravity	4.5 to 4.8
Solid Specific Heat	0.132
Melting Point (°C)	2200 to 2550
Dissociation Temp. (°F)	3200
Thermal Exp. Coef. (cm/cm/°C)	4.2
Mohs Hardness @20°C	7.5-8.0
Angle of Repose (degrees)	30
L.O.I.	0.15 to 0.25
Color	off-white
Thermal Conductivity (BTU/sq.ft./hr/°F/in.)	14.5

• Zircon Flour / Zircon Sand Typical Applications:

High temperature applications. Primary source for investment casting shell molds, foundry cores, metal chills, ladle brick, welding rod coatings, abrasive cleaning, ceramics, glass, chemical, refractory bricks, abrasive & mold washes, solid oxide fuel cells and nuclear power plants.

• Zircon Flour / Zircon Sand Packaging Options:

50 lbs. and 100 lbs. net bags, super sacks and loose bulk.

• Zircon Flour / Zircon Sand TSCA (SARA Title III) Status:

Listed. For further information please call the U.S. Environmental Protection Agency at 1.202.554.1404

• Zircon Flour / Zircon Sand CAS Number:

CAS# 10101-52-7

• Zircon Flour Toxicity:

"Zirconium silicate toxicity is low. It is abrasive irritant for skin and eyes. Chronic exposition to dust can cause pulmonary granulomas, skin inflammation, and skin granuloma." Source: Wikipedia