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SODIUM HYPOCHLORITE (SOLUTION, ACTIVE CHLORINE >10%)ICSC: 1119
April 2017
CAS #: 7681-52-9Sodium oxychloride
Sodium chloride oxide
UN #: 1791
EINECS #: 231-668-3

  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.  In case of fire: keep drums, etc., cool by spraying with water. 

 STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Administration of oxygen may be needed. Refer immediately for medical attention. 
Skin Redness. Skin burns. Pain. Blisters.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer immediately for medical attention. 
Eyes Redness. Pain. Severe burns.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Burning sensation. Abdominal pain. Vomiting. Shock or collapse. Unconsciousness.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Ventilation. Collect leaking and spilled liquid in sealable non-metallic containers as far as possible. Then wash away with plenty of water. Do NOT absorb in saw-dust or other combustible absorbents. 

According to UN GHS Criteria

correnviro;aqua
DANGER
May be corrosive to metals
Causes severe skin burns and eye damage
May cause respiratory irritation
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
UN Hazard Class: 8; UN Pack Group: II, III 

STORAGE
Separated from combustible substances, reducing agents, acids and food and feedstuffs. See Chemical Dangers. Cool. Keep in the dark. Well closed. Store only in original container. 
PACKAGING
Do not transport with food and feedstuffs. 
SODIUM HYPOCHLORITE (SOLUTION, ACTIVE CHLORINE >10%) ICSC: 1119
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
CLEAR SLIGHTLY YELLOW SOLUTION WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on contact with acids. Decomposes under the influence of light. This produces toxic and corrosive gases including chlorine (see ICSC 0126). The substance is a strong oxidant. It reacts violently with combustible and reducing materials. This generates fire and explosion hazard. The solution in water is a strong base. It reacts violently with acid and is corrosive. Attacks copper and its compounds and light metals. 

Formula: NaClO
Molecular mass: 74.4
Melting point: -30 - -20°C
Relative density (water = 1): 1.21 (14% aqueous solution)
Density (at 20°C): 1.20 - 1.25 g/ml
Vapour pressure, kPa at 20°C: 2 - 2.5
Solubility in water, g/l at 20°C: 293 (good) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
Serious local effects by all routes of exposure. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin, respiratory tract and digestive tract. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. The effects may be delayed. Medical observation is indicated. See Notes. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. 


Occupational exposure limits
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. 

NOTES
Household bleaches usually contain about 5% sodium hypochlorite (about pH11, irritant), and more concentrated bleaches contain 10-15% sodium hypochlorite (about pH13, corrosive).
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Rinse contaminated clothes (fire hazard) with plenty of water.
Also consult ICSC #0482 (Sodium hypochlorite, active chlorine <10%). 

ADDITIONAL INFORMATION
  EC Classification
Symbol: C, N; R: 31-34-50; S: (1/2)-28-45-50-61; Note: B 

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    See Also:
       Toxicological Abbreviations