ヘクトライト 化学特性,用途語,生産方法
定義
本品は、ベントナイトクレーの主成分であるモンモリロナイト(*)の一種である。参照表示名称：モンモリロナイト
化粧品の成分用途
不透明化剤、非活性剤系分散剤、親水性増粘剤、吸着剤、増量剤
化学的特性
Hectorite is a naturally occurring 2 : 1 phyllosilicate clay of the
smectite (montmorillonite) group and is a principal component of
bentonite clay. Hectorite occurs as an odorless, white to creamcolored,
waxy, dull powder composed of aggregates of colloidalsized
lath-shaped crystals.
使用
hectorite is one of the principal constituents of bentonite clay. used as a thickener and suspending agent in water-based systems in oil-in-water emulsions.
調製方法
Naturally occurring hectorite is mined from weathered bentonite
deposits. It is further processed to remove grit and impurities so that
it is suitable for pharmaceutical and cosmetic applications.
応用例（製薬）
Hectorite is used widely in pharmaceutical preparations as an
absorbent, emulsifier, stabilizer, suspending agent, thickener, and
viscosity-controlling agent.
Hectorite is a component of other naturally occurring clays and
hence may be suitable for use in similar pharmaceutical formulation
applications as an adsorbent, oil-in-water emulsifying agent,
suspending agent, or viscosity-increasing agent. It is also available
as a synthetic material. Hectorite is used to modify the thixotropic
behavior of pharmaceutical dispersions and for stabilizing oil-inwater
emulsion bases. When combined with an appropriate cation, hectorite exhibits properties suitable for use as a contrast
agent.
安全性
Hectorite is a natural clay mineral that is not considered acutely
toxic; therefore no toxicity values have been established. However,
hectorite may contain small amounts of crystalline silica in the form
of quartz.
Dust can be irritating to the respiratory tract and eyes, and
contact with this material may cause drying of the skin. Chronic
exposure to crystalline silica may have adverse effects on the
respiratory system. EU labeling states that the material is not
classified as dangerous.
貯蔵
Hectorite is a stable material and should be stored in a cool, dry
place.
不和合性
Contact between hectorite and hydrofluoric acid may generate heat.
規制状況(Regulatory Status)
Reported in the EPA TSCA Inventory.
ヘクトライト 上流と下流の製品情報
原材料
準備製品