Safety Data Sheets of calcium hypochlorite
SECTION 1 - CHEMICAL PRODUCT IDENTIFICATION
MSDS Name: Calcium Hypochlorite
Catalog Numbers: AC199030010
Synonyms: Calcium oxychloride; Bleaching powder; Calcium Salt; Chlorinated
CAS Registry Number: 7778-54-3
PIN (UN/NA Number(s)): 1748 2880
RTECS Number(s): NH3485000
Chemical Family: Salt of hypochlorous acid
Molecular Formula: O-Cl-Ca-Cl-O
Structural Formula: Ca(OCl)2
Specifications: Available chlorine: 65%min.-70%min.; Water: 5.5%-10%;
Granular size (14-50mesh): 90%min.
Ingredients (by weight %): it contains up to 65%min.-70%min. of
Ca(OCl)2, the remainder includes sodium chloride, water, calcium
chloride, calcium carbonate, calcium hydroxide and calcium chlorate
etc. water content should not be too high or too low in an effort
to avoid product to react with organic contaminates violently.
The presence of magnesium oxide in lime used to prepare calcium
hypochlorite may lead to the formation of magnesium hypochlorite,
which is dangerously reactive.
Impurities such as rust (iron oxide) or other metal oxides can catalyze
decomposition of the material and must be kept at very low levels.
Product Use: Water-treatment agent; Bleaching Agent; Bactericide;
SECTION 2 - HAZARDOUS IDENTIFICATION
Appearance: white solid; products may have a strong chlorine odour
resulting from decomposition of calcium hypochlorite.
Danger Overview: Strong oxidizer. Contact with such material as
oil etc. may cause a fire. Corrosive. May be harmful if swallowed.
Cause eye and skin burns. May cause severe respiratory tract irritation
with possible burns. May cause severe digestive tract irritation
with possible burns.
Potential Health Effects
Eye Contact: Exposure to calcium hypochlorite dust and mist can
cause eye irritation. Concentrated solutions can cause burns which
may result in permanent eye damage.
Skin Contact: Calcium hypochlorite dust and solutions can cause
irritation, and in severe cases, chemical burns with permanent scar.
Ingestion: Calcium hypochlorite may cause burns to the mouth and
digestive tract. Symptoms include abdominal pain, vomiting, difficulty
in breathing, confusion, delirium and, in severe cases, coma and
Inhalation: Dust and mist may irritate the nose and throat and upper
respiratory tract. When mixed with acids, chlorine gas releases.
This gas can cause severe irritation of the nose and throat. Prolonged
exposure to high concentration of chlorine gas may result in severe
Chronic: Prolonged or repeated skin contact may cause dermatitis.
Prolonged or repeated eye contact may cause conjunctivitis. Effects
may be delayed. Laboratory experiments have resulted in mutagenic
SECTION 3-EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering controls: Facilities storing or utilizing this material
should be equipped with an eyewash facility and a safety shower.
Use adequate ventilation to keep airborne concentration low.
Personal Protective Equipment
Eyes: wear appropriate protective eyeglasses or chemical safety
goggles as described by OSHA's eye and face protection regulations
in 29 CFR 1910.133 or European Standard EN166.
Skin: wear appropriate protective gloves to prevent skin exposure.
Clothing: wear appropriate protective clothing to prevent skin exposure.
Respirators: a respiratory protection program that meets OSHA's
29 CFR 1910.134 and ANSI Z88.2 requirement or European Standard
EN 149 must be followed whenever workplace conditions warrant a
4 - FIRST AID MEASURES
Immediately flush the contaminated eye(s) with lukewarm, gently
flowing water for 20-30 minutes, by the clock, holding the eyelid(s)
open. Neutral saline solution may be used as soon as it is available.
DO NOT INTERUPT FLUSHING. Take care not to rinse contaminated water
into the non-affected eye or on to face. If irritation persists,
repeat flushing. Quickly transport victim to an emergency care facility
Avoid direct contact with this material. Wear impervious protective
gloves if necessary. Once contacted, as quickly as possible to flush
contaminated area with lukewarm, gently running water for at least
20-30 minutes, by the clock. DO NOT INTERRUPT
FLUSHING. If necessary, keep emergency vehicle waiting. Under running
water, remove contaminated clothing, shoes and leather goods (e.g.
watchbands, belts). Discard contaminated leather goods and transport
victim to an emergency care facility immediately.
Nerve give anything by mouth if victim is rapidly losing consciousness,
or is unconscious or convulsing.
Have victim rinse mouth thoroughly with water.
Do NOT induce vomiting. Have victim drink 240 to 300ml (8 to 10
oz.) of water to dilute material in stomach. If vomiting occurs
naturally, rinse mouth and repeat administration of water.
Obtain medical attention immediately.
Get medical aid immediately. Remove from exposure to fresh air immediately.
If breathing is difficult, give oxygen. Do ONT use mouth-to-mouth
respiration. If breathing has ceased apply artificial respiration
using oxygen and a suitable mechanical device such as a bay and
Provide general supportive measures (comfort, warmth, rest). Consult
a physician and/or the nearest Poison Control Centre for all exposure
except minor instance of inhalation or skin contact.
SECTION 5 - FIRE FIGHTING MEASURES
Not combustible (does not burn). However, calcium hypochlorite is
a strong oxidizing agent and is a serious fire and explosion risk.
This strong oxidizer may cause a fire as it contacts with combustible
Contaminating or mixing with foreign materials such as combustibles,
grease, and fuels can cause fire;
Containers may explode when heated;
As in any fire, irritating and highly toxic gases may be generated
by thermal decomposition or combustion, wear a self-contained breathing
apparatus in pressure-demand, MSHA/NROSH (approved or equivalent),
and full protective gear during a fire.
Use water spray to cool fire-exposed containers. Contact professional
fire-fighters immediately. Cool containers with flooding quantities
of water until well after fire is out. For small fires DO NOT use
dry chemicals, carbon dioxide or foams. USE WATER ONLY. For large
fires, flood fire area with water from a distance.
SECTION 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as
indicated in Section 3.
Vacuum or sweep up material and place into a suitable disposal container.
Avoid runoff into storm severs and ditches which lead to waterways.
Clean up spills immediately, observing precautions in the protective
Equipments section. Avoid generating dusty conditions. Remove all
sources of ignition. Provide ventilation. Do not get water inside
containers. Do not use combustible materials such as paper towels
to clean up spill.
SECTION 7 - HANDLING AND STORAGE
Use only in a well ventilated area. Minimize dust generation and
accumulation. Do not get in eyes, on skin, or on clothing. Label
containers and keep containers tightly closed after its use. Avoid
contact with heat, sparks and flame. Avoid contact with clothing
and other combustible materials. Do not ingest or inhale. Discard
contaminated shoes. Wash thoroughly after handling. Remove contaminated
clothing and wash before reuse.
Store in original container. Store tightly closed containers in
a clean, cool open or well ventilated area. Keep out of sun, sparks
and flame. The storage area should have a non-combustible, corrosion-resistant
floor and approved drainage. Protect containers from damage or breakage.
Keep away from incompatible material.
Avoid storage for prolonged periods. Regularly and carefully inspect
containers for damage and corrosion. Only corrosion-resistant equipment
should be used in storage area.
SECTION 8 - PHYSICAL AND CHEMICAL PROPERTIES
Physical state: Crystalline granular
Odor: strong chlorine like
Molecular Weight: 142.9848
Conversion Factor: Not applicable
Melting Point: Decomposes at temperatures above 100 deg C
Boiling Point: Not applicable
Flash Point: Not applicable
Decomposition temperature: 175 deg C
Specific Gravity/Density: 2.0 (water=1)
Solubility in Water: 21.5g/100ml at 0 deg C; 23.4g/100ml at 40 deg
Solubility in Other Liquids: Not available. Calcium hypochlorite
reacts with many organic materials.
Vapor Pressure: Not applicable
Vapor Density: Not applicable
Evaporation Rate: Not applicable
pH Value: not available
SECTION 9 - STABILITY AND REACTIVITY
Normally unstable, it readily undergoes violent chemical changes,
but does not detonate. Small amount of water added to a container
of calcium hypochlorite may generate enough heat to initiate the
hazardous decomposition of this material. However, it is stable
at room temperature in closed container under normal storage and
Condition to Avoid:
High temperatures, incompatible materials, ignition sources, dust
generation, acids, excess heat, combustible materials, organic materials,
Incompatibility-Material To Avoid:
Reducing agents, carbontetrachloride, ammonia, aliphatic amines,
aromatic amines, sulfur, sulfides (inorganic, e.g. ferric sulfide,
lead sulfide, sodium sulfide), metal oxides, glycerol, phenols,
diethylene, glycol monomethyl ether, carbon, acetic acid + potassium,
cyanides (e.g. potassium cyanide, sodium cyanide), ammonium chloride,
charcoal, N,N-dichloromethylamine+heat, ethanol, menthol, iron oxide,
rust, 1-propanethiol, isobutanethiol, turpentine, sodium hydrogen
sulfate + starch + sodium carbonate, acetylene, hydroxy compounds
(e.g. ethanol, ethylene glycol, glycerol, sugar), combustible material
(e.g. anthracene, grease, oil, mercaptans, methyl carbitol, nitromethane,
organic matter, and propylmercaptan).
Hazardous Decomposition Products:
Hydrogen chloride, irritating and toxic fumes and gases, oxygen,
Hazardous Polymerization: does not occur.
The stability of solid calcium hypochlorite depends on the content
of moisture, lime and impurities (e.g., magnesium hypochlorite and
metal oxides), and the temperature and humidity of the storage area.
Anhydrous calcium hypochlorite containing 1% moisture may lose 1-3%
available chlorine per year
SECTION 10- DISPOSAL CONSIDERATIONS
Untreated waste calcium hypochlorite must never be discharged directly
into sewers or surface water. Following decontamination, disposal
of residue by secure landfill may be acceptable.
SECTION 11 - TRANSPORT INFORMATION
Description And Shipping Name: Calcium hypochlorite, dry or Calcium
hypochlorite mixtures with more than 39% available chlorine (water
Product Identification Number (PIN): 1748
Classification: 5.1 - Oxidizing substance
Special Provisions: 48, 99, 109
IMO Classification: 5.1
ICAO Classification: 5.1
Packing Group: ¢ò
Description And Shipping Name: Calcium hypochlorite, hydrated or
Calcium hypochlorite hydrated, mixtures with not less than 5.5%
but more than 10% water.
Product Identification Number (PIN): 2880
Classification: 5.1 - Oxidizing substance
Special Provisions: 109
IMO Classification: 5.1
ICAO Classification: 5.1
Packing Group: ¢ò
SECTION 12- RISK PHRASES
R20 Harmful by inhalation.
R21 Harmful in contact with skin.
R36 Irritating to eyes.
R37 Irritating to respiratory system.
R38 Irritating to skin.
SECTION 13- SAFETY PHRASES
S26 In case of contact with eyes, rinse immediately with plenty
of water and seek medical advice.
S36 Wear suitable protective clothing.
S37 Wear suitable gloves.
S39 Wear eye / face protection.