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14150

Sodium Hypochlorite

NaOCl

Specifications

• Sodium Hypochlorite, wt. %

12.5 %

• Chemical Form

NaOCl

• Color Form

A green to yellow colored solution

• Specific Gravity @ 68°F

1.196 min

• Density (lbs./gal. @ 68°F)

9.96 min

• Excess Sodium Hydroxide, wt%

0.2 – 1.0

• Excess Sodium Carbonate, wt%

0.25 max

• Available Chlorine, GPL

142

• Available Chlorine, wt%

11.9

 

Stability Of Sodium Hypochlorite

Sodium hypochlorite is an unstable compound. The stability of sodium hypochlorite is highly affected by the purity of sodium hypochlorite. A slight excess of sodium hydroxide is needed for stability. There are many factors affecting the stability. Lower concentrations are more stable than higher strength solutions. Decomposition of bleach cannot be avoided, but the rate of decomposition can be influenced by contact with catalyzing metallic impurities and organic impurities, exposure to light and the pH of solution. The temperature at which the bleach is manufactured, shipped, and stored influences the stability because the decomposition rate accelerates as temperature increases.

The decomposition of sodium hypochlorite leads to the formation of chlorates and chloride ions. A slower second pathway of decomposition leads to oxygen and chloride formation. Both forms of decomposition leave deposits of white powder containing sodium chlorate. Storage containers should be regularly cleaned or flushed to minimize build-up of contaminants that can lead to a higher decomposition rate.

Handling

The handling of sodium hypochlorite requires a clear understating and knowledge of safety handling and storage precautions. Avoid all direct contact with sodium hypochlorite. It is irritating to the eyes, skin, and mucous membranes. Use of proper protective equipment is recommended (goggles and impervious gloves). Proper selection of storage tanks, equipment, and site location are extremely important to safely store and handle bleach. Relatively few materials of construction can withstand the highly reactive nature of sodium hypochlorite. Using incompatible material with bleach can damage equipment and contaminate product. The only metals that should be used with bleach are titanium or tantalum. Plastics such as polyethylene, PVC, Teflon and other compatible plastics are the most common used materials.

Compatible Materials

  • PVDF (Fluorinated polyvinylidene)

  • PTFE (Polytetrafluoroethylene)

  • Ethylene propylene rubber

  • Chlorobutyl rubber 100%

  • Polypropylene

  • PVC

  • CPVC

  • Tantalum

  • Titanium

Safety

Sodium hypochlorite will react with acids, ammonium hydroxide (aqua ammonia), or cleaners containing ammonia compounds to generate hazardous gases. Bleach may react violently with some organic compounds. A vigorous reaction with a pressure build-up is possible if the product decomposes in the containers. Care must be taken when opening containers to make sure excess pressure is not present. Care should be practiced to prevent mixing of any non-compatible compounds.

Safety Precautions
  • Proper personal protective equipment should always be worn

  • Keep containers closed when not in use

  • Avoid breathing fumes

  • Avoid contact with eyes, skin, and clothing

  • Wash thoroughly after handling

  • Do not allow contact with organic materials

  • Do not mix with acids, ammonia or reducing agents

  • Titanium

Information obtained from:
Handbook of Chlorination (1972), New York: Van Norstrand Reinhold Company

Liquid Bleach (Sodium Hypochlorite)

Liquid Bleach is a green to yellow colored solution with a mild chlorine odor. Hill Brothers' Liquid Bleach* is available in a standard concentration of 12.5% by weight sodium hypochlorite.

Chemical Properties Of Bleach - 12.5%

• Sodium Hypochlorite, wt. %

12.5 %

• Chemical Form

NaOCl

• Color Form

A green to yellow colored solution

• Specific Gravity @ 68°F

1.196 min

• Density (lbs./gal. @ 68°F)

9.96 min

• Excess Sodium Hydroxide, wt%

0.2 – 1.0

• Excess Sodium Carbonate, wt%

0.25 max

• Available Chlorine, GPL

142

• Available Chlorine, wt%

11.9

Nsf Standard 60
  • Maximum Use Level

  • 84 mg/L

Packaging

Tank Truck, LTL Mini-Bulk, Totes, Drums and Carboys.

Safety And Handling

Protective clothing, such as rubber gloves, safety goggles, and rubber safety boots should be worn to protect from eye and skin contact. Refer to the Material Safety Data Sheet.

Hill Brothers Chemical Hill Brothers Chemical