Nippon Light Metal Company, Ltd.

Kaoru Shimada

Takehiro Matsunaga

Takashi Toyama

Noriyuki Harada

Hiromichi Ito

Tomohide Okada

Hideo Shimazu

Yukihiro Sugiyama

Hiroshi Fujihisa

Satoshi Takeya

Yoshito Gotoh

Masayuki Hanazaki

Provided are sodium hypochlorite pentahydrate crystals capable of long-term storage that have improved stability of sodium hypochlorite pentahydrate, which is effective as an oxidizing 5 agent or bactericide, in the vicinity of normal temperatures, and a method for producing the same. The sodium hypochlorite pentahydrate crystals are such that peaks appear at the locations of the angles of diffraction described in Table 1 of claimover a range of 10&#xb0;&#x2264;2&#x3b8; (angle of diffraction)&#x2264;65&#xb0; as measured by powder X-ray diffraction using a Cuk&#x3b1; radiation source.

Sodium hypochlorite pentahydrate crystals and method for producing same

A coolant, comprising an aqueous solution of potassium hydrogencarbonate, a polyhydric alcohol and, where desired, 1.0 to 20.0% by weight of saccharides, which may be additionally incorporated, for the purpose of protection against corrosion, with 0.01 to 0.5% by weight of at least one compound selected from the group consisting of alkali metal salts of silicic acid, alkali metal salts of metasilicic acid and alkali metal salts of polyphosphoric acid. The coolant has an eutectic melting point as low as -8.5.degree. C. or below and is less corrosive to metal containers. In addition, the potassium hydrogencarbonate in the coolant is quite stable, so that the bubbling phenomenon of the coolant could be prevented.

Coolant

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Tokyo, Japan

Kaoru Shimada