ステアリン酸ナトリウム 化學(xué)特性,用途語(yǔ),生産方法
外観
白色～わずかにうすい黃色, フレーク
定義
本品は、ステアリン酸(*)のナトリウム塩であり、次の化學(xué)式で表される。
參照表示名稱(chēng)：ステアリン酸
溶解性
冷水, 冷エタノールにはゆっくり溶け, 熱すれば易溶。熱水に溶けやすい。
無(wú)機(jī)性値/有機(jī)性値
650/360
用途
界面活性剤、洗剤?zhí)砑游铩⒎浪畡垺?
用途
合成ゴムや合成樹(shù)脂の乳化重合剤及び分散剤、離型剤、ハミガキ粉、防水剤、無(wú)機(jī)粉體の表面改質(zhì)剤、炭カルコーティング剤、アクリルゴム加硫促進(jìn)剤、化粧品原料(清浄用化粧品、頭髪用化粧品、基礎(chǔ)化粧品、メークアップ化粧品、芳香化粧品、日焼け?日焼け止め化粧品、爪化粧品、アイライナー化粧品、口唇化粧品、口腔化粧品、入浴用化粧品)
化粧品の成分用途
親水性増粘剤、乳化剤、洗浄剤
効能
乳化剤, 硬化剤
主な用途／役割
エポキシ樹(shù)脂系接著剤、シーリング材に使用される。
説明
Sodium stearate is the sodium salt of stearic acid. This white solid is the most common soap. It is found in many types of solid deodorants, rubbers, latex paints, and inks. It is also a component of some food additives and food flavorings.
化學(xué)的特性
Sodium stearate, NaC18H35O2, white to off-white powder, soluble, froth or foam upon shaking the water solution (soap), formed by reaction of NaOH and stearic acid (in alcoholic solution) and evaporating. Used as a source of stearate.
使用
sodium stearate is a fatty acid used as a waterproofing agent. Sodium stearate is one of the least allergy-causing sodium salts of fatty acids. It is non-irritating to the skin.
定義
ChEBI: Sodium octadecanoate is an organic sodium salt comprising equal numbers of sodium and stearate ions. It has a role as a detergent. It contains an octadecanoate.
調(diào)製方法
Sodium stearate is produced as a major component of soap upon saponification of oils and fats. The percentage of the sodium stearate depends on the ingredient fats. Tallow is especially high in stearic acid content (as the triglyceride), whereas most fats only contain a few percent. The idealized equation for the formation of sodium stearate from stearin (the triglyceride of stearic acid) follows :
(C
18H
35O
2)
3C
3H
5 → C
3H
5(OH)
3 + 3 C
17H
35CO
2Na
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide.
安全性プロファイル
Poison by intravenous route. When heated to decomposition it emits toxic fumes of Na2O.
純化方法
It is better to prepare it by adding a slight excess of octadecanoic acid to ethanolic NaOH, evaporating and extracting the residue with dry Et2O. [Beilstein 2 III 1003.]
ステアリン酸ナトリウム 上流と下流の製品情報(bào)
原材料
準(zhǔn)備製品