木ろう 化学特性,用途語,生産方法
定義
本品は、ハゼノキ Rhus succedanea の果皮から得られる常温で固体の油脂である。
解説
木ろう，粗製木ろうは淡黄色で生ろうといい，天日にさらして脱色精製したものをさらしろうという．主成分はパルミチン酸グリセリド．特有の臭気と味をもつ白色～淡黄色の固体．融点52～53 ℃．クロロホルム，エーテル，ベンゼン，二硫化炭素などに可溶，沸騰アルコールに一部溶解.
用途
冷エタノールに難溶．皮革油，光沢剤，化粧品などに用いられる.
化粧品の成分用途
非水系増粘剤、結合剤
説明
Japan wax is a tallow obtained from the fruits of the oriental sumac,
Rhus succedanea (Japan, Formosa, and Indo-China), R. vemicifera
(Japan) and R. trichocarpa (China, Indo-China, India, and Japan).
Japan wax is prepared mostly from the mesocarp by hot pressing
the immature fruit. Depending upon the method of preparation,
the commercial tallow may contain more or less of the kernel fat
which alters its melting range. Japan wax may be bleached by
exposing flakes to sunlight for some days or weeks.
The wax is unusual in that it contains glycerides of the C19-C23
dibasic acids and also has a particularly high content of tripalmitin.
The former are credited with giving Japan wax its characteristic
properties of toughness and ability to be kneaded without crumbling.
Uses of Japan wax include the manufacture of candles, wax
matches, pomades, creams, polishes, textile finishes and sizing,
and lubricant for cordage and leather dressing.
化学的特性
Pale-yellow solid; tallowlike rancid odor. Contains 10–15% palmatin and other glycerides. Soluble in benzene and naphtha; insoluble in water and in cold alcohol. Combustible.
使用
As a substitute for beeswax in wax varnishes or candles, ingredients in plasters, ointments; floor waxes, furniture polish. As a plasticizer in dental impression compounds.
木ろう 上流と下流の製品情報
原材料
準備製品