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Zinc Borate，Molecular weight: 434.75.
It is a kind of powder with non-toxic, tasteless, no smell，
relative density : 2.67，melt point: 980ºC，Insoluble in ethanol,
butanol and acetone，Easily soluble in hydrochloric acid, sulfuric
acid and dimethyl。Refractivity: 1.58~1.59，hard to dissolve in cold
water，but can dissolve slowly in hot water and turn into 1% solution，
stable under 300ºC，once over 300ºC will release crystal water which
can absorb heat and dilute oxygen in the air.
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