MATERIALS SAFETY DATA SHEET OF SODIUM HYDROXIDE SOLUTION

Chemical name	Sodium Hydroxide
Synonyms	Caustic Soda, Soda Lye, Sodium Hydrate
Molecular mass	40 gm/mol
CAS no.	1310-73-2
Physical appearance	White hygroscopic solid in various forms.
Chemical dangers	The solution in water is a strong base. It reacts violently with acid and is corrosive to metals such as aluminium, tin, lead and zinc. This produces a combustible/explosive gas (Hydrogen). Reacts with ammonium salts. This produces ammonia. This generates fire hazard. Contact with moisture and water generates heat.
Boiling point	1388⁰C
Melting point	318⁰C
Specific gravity	A sodium hydroxide solution containing 40% by weight of pure NaOH has a specific gravity of 1.5. gm/cc
Chemical formula	NaOH
Flammability	No
Solubility in water	gm/100ml at 20°C: 109 (very good)
UN no.	1823
Storage	Separated from food and feedstuffs, strong acids and metals. Store only in original container, Dry, well closed and store in an area without drain or sewer access.
Inhalation risk	A harmful concentration of airborne particles can be reached quickly when dispersed.
Effects of short-term exposure	The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.
Effects of long-term or repeated exposure	Repeated or prolonged contact with skin may cause dermatitis.

PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!

	Symptoms	Prevention	First aid
Inhalation	Cough. Sore throat. Burning sensation. Shortness of breath.	Use local exhaust or breathing protection.	Fresh air, rest. Refer immediately for medical attention.
Skin	Redness. Pain. Serious skin burns. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower for at least 15 minutes. Refer immediately for medical attention.
Eyes	Redness. Pain. Blurred vision. Severe burns.	Wear face shield 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	Abdominal pain. Burns in mouth and throat. Burning sensation in the throat and chest. Nausea. Vomiting. Shock or collapse.	Do not eat, drink, or smoke during work.	Rinse mouth. DO NOT induce vomiting. If within a few minutes after ingestion, one small glass of water may be given to drink. Refer immediately for medical attention.