This chemical is a white or yellowish solid that is soluble in water
The Japan P&I Club issues circular regarding all the frequently asked questions for Calcium Hypochlorite as follows:
We refer to our Special Circular No. 99-021 dated 6 December 1999 and No. 00-011 dated 21 September 2000. International Group of P&I Clubs wish to raise awareness in the maritime industry of the hazards and precautions associated with the carriage of calcium hypochlorite through the following FAQ’s.
1 What is calcium hypochlorite?
This chemical is a white or yellowish solid that is soluble in water. There are several products manufactured as water purification and bleaching agents, which contain calcium hypochlorite (CH) as their active ingredient. The three most common products are twohigh strength types (UN1748 and UN 2880) and a lower strength type, often referred to as bleaching powder (UN2208).
The entries in the IMDG CODE are shown as follows:
- Class 5.1 UN 1748Calcium hypochlorite dry, or calcium hypochlorite mixtures, dry containing more than 39% active chlorine;
- Class 5.1 UN 2880Calcium hypochlorite hydrated, or calcium hypochlorite hydrated mixture containing not less than 5.5% but not more than 16% water;
- Class 5.1 UN 2208 Calcium hypochlorite mixture dry containing more than 10% active chlorine but not more than 39% active chlorine
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Source: The Japan P&I Club
