WebContents move to sidebar hide Début 1 Historique de la description et appellations Afficher / masquer la sous-section Historique de la description et appellations 1.1 Inventeur et étymologie 1.2 Synonymie 2 Caractéristiques physico-chimiques Afficher / masquer la sous-section Caractéristiques physico-chimiques 2.1 Critères de détermination 2.2 Variété 2.3 …

WebTalc, or talcum, is a clay mineral, composed of hydrated magnesium silicate with the chemical formula Mg 3 Si 4 O 10 (OH) 2.Talc in powdered form, often combined with corn starch, is used as baby powder.This mineral is used as a thickening agent and lubricant.It is an ingredient in ceramics, paints, and roofing material.It is a main ingredient in many …

WebCoty Inc. is an American-French multinational beauty company founded in 1904 by François Coty.With its subsidiaries, it develops, manufactures, markets, and distributes fragrances, cosmetics, skin care, nail care, and both professional and retail hair care products. Coty owns around 77 brands as of 2018.

WebThe Mohs scale of mineral hardness (/ m oʊ z /) is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.. The scale was introduced in 1812 by the German geologist and mineralogist Friedrich Mohs, in his book "Versuch einer Elementar-Methode zur …

WebPyrophyllite is a phyllosilicate mineral composed of aluminium silicate hydroxide: Al 2 Si 4 O 10 (OH) 2.It occurs in two forms (): crystalline folia and compact masses; distinct crystals are not known.The folia have a pronounced pearly luster, owing to the presence of a perfect cleavage parallel to their surfaces: they are flexible but not elastic, and are usually …

WebBaby powder is an astringent powder used for preventing diaper rash and for cosmetic uses. It may be composed of talc (in which case it is also called talcum powder) or corn starch.It may also contain additional ingredients like fragrances.Baby powder can also be used as a dry shampoo, cleaning agent (to remove grease stains), and freshener.. Health …

Web滑石（かっせき、英: talc 、タルク）は、珪酸塩鉱物の一種でフィロケイ酸塩鉱物に分類される鉱物。 あるいはこの鉱物を主成分とする岩石の名称。 別名としてフレンチチョーク、ステアタイト、ソープストーンなどがある。

WebDiatomaceous earth (/ ˌ d aɪ. ə t ə ˈ m eɪ ʃ ə s /), diatomite (/ d aɪ ˈ æ t ə ˌ m aɪ t /), or kieselgur/kieselguhr is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine white to off-white powder. It has a particle size ranging from more than 3 μm to less than 1 mm, but typically 10 to 200 μm.Depending on the granularity, this …

WebPovidone iodine is equally effective and safe as talc, and may be preferred because of easy availability and low cost. Chemical pleurodesis is a painful procedure, and so patients are often premedicated with a sedative and analgesics. A local anesthetic may be instilled into the pleural space, or an epidural catheter may be placed for anesthesia.

WebThe Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic Eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were …