ICSC 1229 - SODIUM TETRABORATE

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SODIUM TETRABORATE	ICSC: 1229 (April 2014)
Disodium tetraborate, anhydrous Boric acid, disodium salt Sodium biborate Sodium pyroborate Boron sodium oxide Fused borax

CAS #: 1330-43-4

EC Number: 215-540-4

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST! STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Shortness of breath.	Use local exhaust or breathing protection.	Fresh air, rest.
Skin	Redness.	Protective gloves. Protective clothing.	Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Wear safety spectacles or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Nausea. Vomiting. Abdominal pain. Diarrhoea. Weakness. Drowsiness.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention.

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. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER Causes serious eye irritation May cause respiratory irritation May damage fertility or the unborn child Transportation UN Classification
STORAGE
Dry. Well closed.
PACKAGING

SODIUM TETRABORATE

ICSC: 1229

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR POWDER. TURNS OPAQUE ON EXPOSURE TO AIR. Physical dangers Chemical dangers Decomposes at 1575°C. This produces toxic fumes including sodium oxide.	Formula: Na₂B₄O₇ / Na₂*2B₂O₃ Molecular mass: 201.3 Decomposes at 1575°C Melting point: 742°C Relative density (water = 1): 2.4 Solubility in water, g/100ml at 20°C: 2.56

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR POWDER. TURNS OPAQUE ON EXPOSURE TO AIR.

Physical dangers

Chemical dangers
Decomposes at 1575°C. This produces toxic fumes including sodium oxide.

Formula: Na₂B₄O₇ / Na₂*2B₂O₃
Molecular mass: 201.3
Decomposes at 1575°C
Melting point: 742°C
Relative density (water = 1): 2.4
Solubility in water, g/100ml at 20°C: 2.56

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system and kidneys. This may result in impaired functions.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly , especially if powdered. Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the upper respiratory tract and testes. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system and kidneys. This may result in impaired functions.

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

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the upper respiratory tract and testes. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (inhalable fraction): 2 mg/m³, as TWA; 6 mg/m³ as STEL; A4 (not classifiable as a human carcinogen). MAK: 0.75 mg/m³; peak limitation category: I(1); pregnancy risk group: C

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification
R: 60-61; S: 53-45; Symbol: T

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