ICSC 1511 - SODIUM SESQUICARBONATE DIHYDRATE

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SODIUM SESQUICARBONATE DIHYDRATE

ICSC: 1511
_{April 2004}

Carbonic acid, sodium salt, hydrate (2:3:2)
Trona
Natural sodium sesquicarbonate

CAS No: 6106-20-3
RTECS No: FG2099000

C₂H₅Na₃O₈ / Na₂CO₃.NaHCO₃.2H₂O
Molecular mass: 226.0

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRE FIGHTING
FIRE	Not combustible.		In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION

EXPOSURE
Inhalation	Cough. Sore throat.	Local exhaust or breathing protection.	Fresh air, rest.
Skin	Redness. Dry skin.	Protective gloves.	Rinse skin with plenty of water or shower.
Eyes	Redness.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.

EMERGENCY RESPONSE	STORAGE
	Separated from acids.

IMPORTANT DATA
Physical State; Appearance SOLID IN VARIOUS FORMS Chemical dangers The solution in water is a weak base. Reacts with acids. Occupational exposure limits TLV not established. MAK not established.	Inhalation risk A nuisance-causing concentration of airborne particles can be reached quickly especially if powdered. Effects of short-term exposure The substance is irritating to the eyes, the skin and the respiratory tract. Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Melting point (decomposes): >70°C Density: 2.1 g/cm³ Solubility in water, g/100 ml at 20°C: 16

NOTES

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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Updated by AS. Approved by EC. Last update: 05.07.2004