CALCIUM HYPOCHLORITE MIXTURE, DRY, WITH MORE THAN 39% AVAILABLE CHLORINE (8.8% AVAILABLE OXYGEN)

Diamond	Hazard	Value	Description
0 3 1 ox	Health	3	Can cause serious or permanent injury.
	Flammability	0	Will not burn under typical fire conditions.
	Instability	1	Normally stable but can become unstable at elevated temperatures and pressures.
	Special	OX	Possesses oxidizing properties.

A white granular solid with an odor of chlorine or tablets compressed from the granules. Prolonged exposure to fire or heat may result in the vigorous decomposition and the rupture of its container. Material containing less than 39 percent available chlorine will undergo reactions as described above though the reactions may take longer to initiate and may not be as vigorous. Used in water purification, as a swimming pool disinfectant, as a bleaching compound.

• Strong Oxidizing Agent

Water soluble. Slowly decomposed by water with the evolution of gaseous chlorine and heat.

Experimental work at Argonne National Laboratory has determined that there is essentially no Cl2 gas formation; the substance is quite unreactive in water. This does not prevent Cl2 formation by a catalytic mechanism, but under normal conditions calcium hypochlorite is quite unreactive. The hydration reaction was rapid and quite exothermic. The small change in gas volume was attributed to this heating. (Argonne Report ANL/DIS-00-1, October 2000).

Behavior in Fire: Poisonous gases may be produced when heated (USCG, 1999)

INHALATION: hypochlorous acid fumes given off only if compound comes in contact with acid, cause severe respiratory tract irritation and pulmonary edema. INGESTION: pain and inflammation of mouth, pharynx, esophagus, and stomach; erosion of mucous membranes, chiefly of the stomach; vomiting (hemorrhaging may cause vomitus to resemble coffee grounds); circulatory collapse, with cold and clammy skin, cyanosis, and shallow respirations; confusion, delirium, coma; edema of pharynx, glottis, and larynx, with stridor and obstruction; perforation of esophagus or stomach, with mediastinitis or peritonitis. SKIN CONTACT: may cause vesicular eruptions and eczematoid dermatitis. (USCG, 1999)

CALCIUM HYPOCHLORITE MIXTURE is a powerful oxidizing agent, particularly in the presence of water or at higher temperature as it decomposes to release oxygen and chlorine gases. As strong oxidant it may react with vigor in combination with carbon, especially finely divided is explosive; acetylene, leads to creation of explosive chloroacetylenes; organic matter, oil, hydrocarbons; alcohols may cause explosion, methanol, ethanol, etc.; nitromethane caused delayed violent reaction; organic sulfur compounds, sulfides tend toward ignition and sometimes explosion; with iron oxide in metal containers catalyze oxygen evolving decomposition of the oxidant. It forms highly explosive NCl3 on contact with urea or ammonia. Produces highly toxic gaseous chlorine gas when heated or on contact with acids [Sax, 9th ed., 1996, p. 1905]. Mixture of damp sulfur with hypochlorite caused a violent reaction, that ejected molten sulfur, Chem Eng. News, 1965, 46(29), 6.

• Salts, Basic
• Oxidizing Agents, Strong

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Cellulose-Based Absorbents
• Expanded Polymeric Absorbents

Excerpt from 140 [Oxidizers]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

LARGE SPILL: Consider initial downwind evacuation for at least 100 meters (330 feet).

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. If ammonium nitrate is in a tank, rail car or tank truck and involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, initiate evacuation including emergency responders for 1600 meters (1 mile) in all directions. (ERG, 2020)

Excerpt from 140 [Oxidizers]:

SMALL FIRE: Use water. Do not use dry chemicals or foams. CO2 or Halon® may provide limited control.

LARGE FIRE: Flood fire area with water from a distance. Do not move cargo or vehicle if cargo has been exposed to heat. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2020)

Excerpt from 140 [Oxidizers]:

Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Do not get water inside containers.

SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area.

SMALL LIQUID SPILL: Use a non-combustible material like vermiculite or sand to soak up the product and place into a container for later disposal.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. (ERG, 2020)

Protective goggles, dust mask. (USCG, 1999)

No information available.

INGESTION: swallow immediately milk, egg white, starch paste, milk of magnesia, aluminum hydroxide gel, or magnesium trisilicate gel. Avoid sodium bicarbonate because of the release of carbon dioxide. Do not use acidic antidotes; cautious gastric lavage with tap water or a 1% solution of sodium thiosulfate; milk of magnesia (1 oz) left in the stomach is useful as a mild antacid, adsorbent, demulcent, and cathartic; demulcents, such as starch, egg white, milk, gruel; opiates for the control of pain. Treat shock vigorously with intravenous fluids. Prompt surgical intervention when indicated, e.g., tracheotomy, gastrectomy.

SKIN: wash with liberal quantities of water and apply a paste of baking soda. (USCG, 1999)

• B-K POWDER
• BLEACHING POWDER
• CALCIUM HYPOCHLORITE
• CALCIUM HYPOCHLORITE (BLEACHING POWDER)
• CALCIUM HYPOCHLORITE MIXTURE, DRY, WITH MORE THAN 39% AVAILABLE CHLORINE (8.8% AVAILABLE OXYGEN)
• CALCIUM HYPOCHLORITE MIXTURE, [DRY, WITH >39% AVAILABLE CHLORINE]
• CALCIUM HYPOCHLORITE, DRY
• CALCIUM OXYCHLORIDE
• CAPORIT
• CHEMICHLON G
• CHLORIDE OF LIME
• CHLORINATED LIME
• CHLORO LIME CHEMICAL
• EUSOL BPC
• HTH
• HTH (BLEACHING AGENT)
• HTH DRY CHLORINE
• LIME CHLORIDE
• LOSANTIN
• NEUTRAL ANHYDROUS CALCIUM HYPOCHLORITE
• NISSO HI-CHLON LC
• SOLVOX KS
• T-EUSOL