Agent Name

Diatomite

Alternative Name

Kieselguhr, soda ash flux-calcined

CAS Number

68855-54-9

Formula

Unspecified

Major Category

Mineral Dusts

Synonyms

Diatomaceous silica, flux-calcined; Flux-calcined diatomaceous earth; Diatomaceous earth; Kieselguhr, soda ash flux-calcined; Amorphous silica: Flux-calcined diatomaceous earth; Silica amorphous diatomaceous earth (uncalcined); Silica, amorphous, diatomaceous earth; Silica, amorphous, including natural diatomaceous earth; [ChemIDplus] Diatomaceous earth, fluxcalcined; Diatomeenerde; Flux calcinated diatomaceous earth; Flux calcinated diatomite; Flux calcined kieselguhr; Flux gecalcineerde kieselguhr; Kieselgoer; Silica; [IUCLID] Celite 545; [Acros Organics MSDS]

Category

Other Mineral Dusts

Description

Solid; [IUCLID] Off-white odorless powder; [Acros Organics MSDS]

Sources/Uses

Used in the agricultural, chemical, paints-lacquers-varnishes, fuel, and paper-pulp-board industries; Used as a raw material for wire drawing lubricants, absorbents, cleaning/washing agents, fillers, and filtration aids; [IUCLID]

Comments

Contains crystalline silica, known to cause occupational silicosis; Causes no skin and mild eye irritation; Not a skin sensitizer; [IUCLID] The main problem in assessing the risk of exposure to diatomaceous earth is its varying degree of contamination with crystalline silica. While the natural version usually contains about 1%, up to 60% may be present in flux-calcined amorphous silica. [Rom, p. 527] A strong eye irritant; Prolonged or repeated inhalation exposure may cause serious adverse health effects; [Acros Organics MSDS] See "Kieselguhr, calcined." See "Silica, amorphous" and "Silica, crystalline."

Adverse Effects
Chronic Bronchitis

Yes

Fibrogenic

Yes

IARC Carcinogen

Not Classifiable

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Processes

Industrial Processes with risk of exposure: