ほう酸トリイオン 化学特性,用途語,生産方法
解説
硼酸塩,一般に硼酸塩は(BO3)3-基をもつ鉱物をいうが,他に硼素塩(boron salt)からなる化学的沈澱物をいい,硼砂(borax), 灰硼石(colemanite=calcium borate), 天然硼砂(tincal=sodium borate)などがある.硼酸塩(borate salt)は普通は石膏,硬石膏,炭酸ナトリウム,硫酸ナトリウムなどが伴い,最近の火山活動に関係するものらしい[Hatch, et al. : 1938].
使用
Borates also found use for control of weeds in specific
locations. The introduction of synthetic organic herbicides
that acted selectively against broad-leaved weeds changed
the situation irreversibly. The first organic chemical
herbicide to be introduced was 4,6-dinitro-o-cresol [534-
52-1] (DNOC) in 1932.
农业用途
Borate is a salt of boric acid (H
3BO
3). There are two known types of borates - orthoborate and metaborate which are used as fertilizers. Besides these, polyborates, boric acid, calcium polyborate (colemanite), sodium tetraborate, solubor and complex borosilicate (boron frits) are also used as fertilizers to reduce boron deficiency. Borate minerals like kernite and tincal are the main sources of borax.
Borax, a source of boron, is the salt of boric acid, sodium hydroxide and sodium carbonate. Borax, otherwise called disodium tetraborate decahydrate(Na
2B
4O
7·10H
2O)is a water-soluble white compound. It occurs as a mineral in some alkaline salt deposits. The main sources of borax are borate minerals, kernite(Na
2B
4·4H
2O),a sorite and heal(Na
2B
4O
7·10H
2O)which are purified by recrystallization. On treatment with an acid, borax gives boric acid which is absorbed as boron by plants. Borax contains 10.5 to 11.4% boron or 36.5% boric oxide (B
2O
3).
Borax is a supplier of micronutrient boron for plants and is applied as such or as a foliar spray. Solubor is preferred to borax for its greater solubility and because it causes minimum changes in the crystallization temperature.
Borax is a very important substance in other industries too. It is used as a metallurgical flux in glass and ceramic industries, a buffer, a mild alkaline antiseptic and a source of boron compounds.
ほう酸トリイオン 上流と下流の製品情報
原材料
準備製品