Boron Fertilizer H3BO3 Powder Boric Acid

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boric acid bp

h3bo3 -- 61.8 -- 10043-35-3

boric acid bp

definition

boric acid contains not less than 99.0 per cent and not more than the equivalent of 100.5 percent of h3bo3.

characters

a white, crystalline powder, colourless, shiny plates greasy to the touch, or white  crystals, soluble in water and in alcohol, freely soluble in boiling water and in glycerol  (85 per cent).

boric acid usp nf

h3bo3 -- 61.83

boric acid usp-nf (h3bo3) [10043-35-3].

boric acid contains not less than 99.5 percent and not more than 100.5 percent of h3bo3, calculated on the dried basis.

solubility in alcohol— one g dissolves completely in 10 ml of boiling alcohol.

completeness of solution— one g dissolves in 25 ml of water, producing a clear solution.

identification— it responds to the tests for borate.

loss on drying— dry it over silica gel for 5 hours: it loses not more than 0.5% of its weight.

heavy metals— dissolve 1 g in 23 ml of water, and add 2 ml of 1 n acetic acid: the limit is 0.002%.

acs specifications

american chemical society

boric acid acs analytical reagent

requirements

assay: 99.5% h3bo3

maximum allowable

insoluble in methanol ......... 0.005%

nonvolatile with methanol ... 0.05%

chloride (cl) ...................... 0.001%

phosphate (po4) ................ 0.001%