ICSC 0248 - DIATOMACEOUS EARTH (UNCALCINED)

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DIATOMACEOUS EARTH (UNCALCINED)	ICSC: 0248 (March 2001)
Amorphous diatomaceous earth Diatomite, uncalcined Diatomaceous earth, natural

CAS #: 61790-53-2

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Dry skin. Roughness.	Protective gloves.	Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Wear safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion		Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.	According to UN GHS Criteria Transportation UN Classification
STORAGE

PACKAGING

DIATOMACEOUS EARTH (UNCALCINED)

ICSC: 0248

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance FINE WHITE POWDER. Physical dangers Heating the material at high temperatures results in the formation of crystalline silica (see ICSC 0809 Cristobalite). Chemical dangers	Formula: SiO₂ Molecular mass: 60.8 Boiling point: >2200°C Melting point: 1710°C Density: 2.3 g/cm³ Solubility in water: none

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
FINE WHITE POWDER.

Physical dangers
Heating the material at high temperatures results in the formation of crystalline silica (see ICSC 0809 Cristobalite).

Chemical dangers

Formula: SiO₂
Molecular mass: 60.8
Boiling point: >2200°C
Melting point: 1710°C
Density: 2.3 g/cm³
Solubility in water: none

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure The substance may have effects on the lungs. This may result in mild fibrosis. See Notes.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation.

Effects of short-term exposure

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

Effects of long-term or repeated exposure
The substance may have effects on the lungs. This may result in mild fibrosis. See Notes.

OCCUPATIONAL EXPOSURE LIMITS
MAK: (inhalable fraction): 4 mg/m³; pregnancy risk group: C

ENVIRONMENT

NOTES
Literature suggests that the fibrosis may be due to crystalline contaminants. Depending on the degree of exposure, periodic medical examination is suggested. Another synonym is Kieselguhr.

ADDITIONAL INFORMATION

EC Classification

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