운모

한글명:운모

카스 번호12001-26-2

상품명:Mica

CBNumberCB6168520

분자식Al2K2O6Si

포뮬러 무게256.24

MOL 파일12001-26-2.mol

동의어(한글)

운모

마이카

화학적 성질

밀도	2,77 g/cm³
굴절률	1.55-1.61
RTECS 번호	VV876000
물리적 상태	Light gray to dark-colored flakes or particles
냄새	100.00%. 냄새 없는
수용성	물에 불용성.
Dielectric constant	2.6-3.2（0.0℃）
EPA	Mica group minerals (12001-26-2)

위험 및 안전 성명

안전지침서	22
OEB	B
OEL	TWA: 3 mg/m3 (resp)
TSCA	Yes
HS 번호	25252000
유해 물질 데이터	12001-26-2(Hazardous Substances Data)
IDLA	1,500 mg/m3

그림문자(GHS)

운모 MSDS

운모 화학적 특성, 용도, 생산

개요
Cosmetic mica, potassium aluminum silicate dehydrate, is refined and ground to particles of ≤150 μm. This material imparts a natural translucence when used up to 20% in formulations of face powder blushes. Mica is available as wet ground (creamy) or as dry ground (matte).
화학적 성질
Mica (muscovite), takes the form of a colorless, odorless solid that separates into flakes or thin sheets of hydrous silicates.
출처
Mica exists in nature in a wide variety of compositions. Muscovite and phlogopite are the only natural micas of commercial importance. Vermiculite, although not considered a true mica by most mineralogists, is a micaceous mineral formed from the weathering of phlogopite or biotite and is also of commercial importance.
용도
mica is used as a texturizer and coloring agent in cosmetics, it provides a “glimmer” or “shimmering” quality in makeup powders. Mica is the group name for a series of ground silicate minerals with similar physical properties but varied chemical composition. Micas range in color from colorless to pale green, brown, or black.
정의
Any of several silicates of vary-ing chemical composition but with similar physicalproperties and crystalline structure. All character-istically cleave into thin sheets that are flexible andelastic. Synthetic mica is available. It has electri-cal and mechanical properties superior to those ofnatural mica; it is also water free.
생산 방법
Mica is a nonfibrous, natural silicate, found in plate form in nine different species. These materials are hydrous silicates, and the predominant minerals of commerce are muscovite, a hydrous aluminosilicate, and phlogophite, a magnesium silicate. Sheet forms of mica in the form of muscovite have historically been mined by hand from pegmatites.
일반 설명
MICA, a generic term, refers to any of a group of approximately 30 silicate minerals occurring as non-fibrous plates. Muscovite (hydrated aluminium potassium silicate[KAl2(AlSi3O10)(F, OH)2 ])and phlogopite (potassium magnesium aluminum silicate hydroxide) are the two major micas of commerce. Micas are commonly found in ordinary rocks. Inhalation of mica dust presents an occupational hazard.
반응 프로필
MICAS have generally low chemical reactivity.
위험도
(Dust) Irritant by inhalation, may be dam-aging to lungs. Pneumoconiosis.
건강위험
Mica dust causes pneumoconiosis.
농업용
Biotite is a widely distributed and important rockforming mineral of the mica group. The general term designates all ferro-magnesium micas, also called black mica or magnesium-iron mica. This black and plate-like mineral is found in some igneous rocks, such as granite. It is tetrahedral mica with aluminum substituted for silicon in the tetrahedral sheet, and ferrous (Fe²⁺) or magnesium (Mg²⁺)io ns in the octahedral sheet.
Potassium release occurs more easily with biotite than with muscovite. Biotite is used as the source of soil potassium. It is more easily weathered to chlorite than muscovite and, therefore, is less common in sediments. Although commercially unimportant under hydrothermal conditions, biotite transforms to vermiculite which expands on heating and has widespread application as light-weight concrete, plaster aggregate, insulation, plant growing medium and lubricant.
공업 용도
Commercial mica is of two main types: sheet,and scrap or flake. Sheet muscovite is used asa dielectric in capacitors and vacuum tubes inelectronic equipment. Lower-quality muscoviteis used as an insulator in home electrical productssuch as hot plates, toasters, and irons.
Scrap and flake mica is ground for use in coatingson roofing materials and waterproof fabrics,and in paint, wallpaper, joint cement, plastics,cosmetics, well-drilling products, and avariety of agricultural products.For many years, glass-bonded mica hasbeen used in every type of electrical and electronicsystem where the insulation requirementsare preferably low-dissipation factor at high frequencies,a high-insulation resistance anddielectric-breakdown strength, along withextreme dimensional stability. Glass-bondedmicas are made in both machinable grades andprecision-moldable grades. Basically, the materialconsists of natural mica flake bonded witha low-loss electrical glass.
The availability of synthetic mica resultedin the development of so-called ceramoplastics,consisting of high-temperature electricalglass filled with synthetic mica. Ceramoplasticsprovide an increase in the electrical characteristicsover those of natural mica, and, inaddition, are more easily molded and havegreater thermal stability.
Safety Profile
The dust is injurious to lungs.
잠재적 노출
Mica is used as reinforcing filler for plastics, substitute for asbestos; for insulation in electrical equipment; used in the manufacture of roofing shingles, wallpaper and paint.
비 호환성
Silicates react with lithium.
폐기물 처리
Consider recycling, otherwise, this chemical must be disposed of in compliance with existing federal and local regulations. Landfill.

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