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Titanium Dioxide [4 oz. jar]

Item No: 475:210100
Category: 28

Price:  $5.50

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Net vol 4 oz
Titanium dioxide white pigments are developments of the 20th century, and because of their high hiding power, nontoxic nature, and reasonable cost, they have eclipsed other traditional white pigments. Anatase and rutile are naturally occurring mineral forms of titanium dioxide that synthesized as pigments.

Pigment Names
Common Names (pigment): English: titanium dioxide
French: oxyde de titane
German: Titandioxid
Italian: bianco di titanio
Japanese: ?????????
Norwegian: titandioksid
Russian: ???????? ??????
Spanish: dióxido de titano
Common Names (Variety): English: anatase, rutile
French: anatase, rutile
German: Anatas, Rutil
Italian: anatasio, rutilo
Norwegian: anatas, rutil
Russian: ??????, ?????
Spanish: anatasa, rutilo
Alternate Names: Titania, titanium white, permanent white

Origin and History
Titanium white can refer to any pigment containing a compound of titanium. The name permanent white has been applied to many pigments, including titanium dioxide whites. Such imprecise names can cause confusion and many are still used today. At the beginning of the 20th century development of titanium dioxide white pigment occurred simultaneously in Norway and the United States. Several processes were later developed and patented by companies in both countries. Use of titanium dioxide as a white pigment in artist's palettes began in field tests as early as 1916, but it wasn't until the 1940's that widespread use of the pigment began.


Permanence and Compatibility
Both rutile and anatase forms of titanium dioxide white are lightfast. However, according to Marilyn Laver, exposure to light can cause a phototropic color change under certain circumstances. Rutile undergoes this reversible color change to a lesser extent than does anatase. The rutile and anatase pigment forms are both chemically inert, and do not react with airborne pollutants, organic solvents and other pigments. Some suggest that the resistance of titanium dioxide pigments to acids and alkalies is an advantage for their use in true fresco.

Oil Absorption and Grinding
Titanium dioxide absorbs a moderate amount amount of oil. The oil absorption ratio is 15–20 parts by weight of oil to 100 parts by weight of pigment. If the measurement were grams, it would require 15 to 20 grams (by weight) of linseed oil to grind 100 grams (by weight) of pigment to form a stiff paste. It makes an average drying oil paint, and forms a soft, brittle film.

Titanium dioxide is not considered to be hazardous, but care should be used in handling the dry powder pigment to avoid inhaling the dust.

Pigment: Titanium White

Pigment Information
Color: White
Colour Index: Pigment White 6 (77891)
Chemical Name: Titanium Dioxide
Chemical Formula: TiO2
ASTM Lightfastness Rating
Acrylic: I
Oil: I
Watercolor: I
Density: 4.0 (rutile)
Refractive Index: n=2.72 (rutile)

Read cautions about handling pigments

Availability: Usually ships within 24 hours.
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