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Titanium Dioxide

Titanium Dioxide

Basic Information

CAS No.: 13463-67-7
Molecular Formula: O2Ti
Molecular weight: 79.87

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Product Details

Titanium Dioxide, also called titania, is an inorganic compound with the chemical formula TiO₂. It is a white, odorless and tasteless amorphous powder, with stable chemical properties that are insoluble in water and most acids, slightly soluble in alkalis and hot nitric acid.


Chemical Properties

PropertyValue
Melting Point1840 °C
Boiling Point2900 °C
Bulk Density850 kg/m³
Density4.26 g/mL at 25 °C (lit.)
Refractive Index2.61
Flash Point2500-3000 °C
Storage ConditionsStore at +5°C to +30°C
SolubilityAlmost insoluble in water, insoluble in dilute inorganic acids, slowly soluble in hot concentrated sulfuric acid.
FormPowder
Acid Dissociation Constant (pKa)3.85
Specific Gravity4.26
ColorWhite to slightly yellow
OdorOdorless
pH Value7-8 (100g/l, H₂O, 20°C) (slurry)
Water SolubilityInsoluble
Crystal StructureOrthorhombic, Pcab
Merck14,9472
Exposure LimitsACGIH: TWA 10 mg/m³
OSHA: TWA 15 mg/m³
NIOSH: IDLH 5000 mg/m³; TWA 2.4 mg/m³; TWA 0.3 mg/m³
Dielectric Constant2.9 (20°C)
Cosmetic Ingredient FunctionsANTIMICROBIAL
OPACIFYING
UV FILTER
COLORANT
UV ABSORBER
InChI1S/2O.Ti
InChIKeyGWEVSGVZZGPLCZ-UHFFFAOYSA-N
SMILESO=[Ti]=O
Hardness, Mohs5.5 - 6.0
CAS Database13463-67-7 (CAS DataBase Reference)
IARC Carcinogen Classification2B (Vol. 47, 93) 2010
NIST Chemical Substances InformationTitanium dioxide (13463-67-7)
EPA Chemical Substances InformationTitanium dioxide (13463-67-7)


Safety Information

PropertyValue
Hazard Symbols(Information missing from original table)
Hazard Class Codes10-20-22
Safety Description Codes26-36-25-2-36/37-45-36/37/39
WGK Germany(Information missing from original table)
TSCATSCA listed
HS Code28230000
Storage Class13 - Non-combustible solids
Hazardous Substances Data13463-67-7 (Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: >10000 mg/kg
Immediately Dangerous to Life or Health Concentration (IDLH)5,000 mg/m³


Product Usage

Titanium dioxide is a white pigment with excellent performance. In the coatings industry, it is an indispensable colorant and opacifier, providing high whiteness, hiding power, and weather resistance to coatings. In the plastics and rubber industries, it is used to enhance UV resistance and mechanical properties of products. In the paper industry, it serves as a filler to improve whiteness, opacity, and printability. Additionally, in cosmetics, due to its physical sunscreen properties, it is widely used in sunscreens and foundations to effectively reflect UV rays. It also plays a key role in the ink and ceramic industries.

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