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실리카겔

실리카겔
실리카겔 구조식 이미지
카스 번호:
112926-00-8
한글명:
실리카겔
동의어(한글):
실리콘화합물실리카겔;규산겔;무정형합성실리카젤;산화규소;실리카겔;실리카수화물
상품명:
Silica gel
동의어(영문):
SAND;G118307;SILICA GEL;IATROBEADS;Silica gel;DAVISIL(TM);SILICAR CC-4;Drying perls;SILICA GEL 7;WAKOGEL(R) G
CBNumber:
CB1199389
분자식:
O2Si
포뮬러 무게:
60.0800018310547
MOL 파일:
Mol file

실리카겔 속성

녹는점
1610°C
끓는 점
2230℃
밀도
2.6
인화점
23°C
저장 조건
2-8°C
물리적 상태
powder or granules
Specific Gravity
0.88g/ml
색상
blue
수소이온지수(pH)
~6.8 (10% in aq. suspension)
Merck
14,8493
CAS 데이터베이스
112926-00-8
EPA
Silica gel, pptd., cryst.-free(112926-00-8)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xi,T,N,Xn
위험 카페고리 넘버 20-37-42/43-49-36/37-48/20-51/53-68-50/53-41-22-60
안전지침서 22-24/25-45-36/37-53-26-36-61-60-39
유엔번호(UN No.) 1993
WGK 독일 2
RTECS 번호 VV7315000
F 고인화성물질 3
위험 참고 사항 Harmful/Irritant
TSCA Yes
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H412 장기적 영향에 의해 수생생물에 유해함 수생 환경유해성 물질 - 만성 구분 3 P273, P501
예방조치문구:
P201 사용 전 취급 설명서를 확보하시오.
P273 환경으로 배출하지 마시오.
P308+P313 노출 또는 접촉이 우려되면 의학적인 조치· 조언를 구하시오.

실리카겔 MSDS


Silica gel

실리카겔 C화학적 특성, 용도, 생산

화학적 성질

white to off-white powder

화학적 성질

Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder

용도

Silica gel was used on glass plates for preparative TLC and on aluminium sheets for analytical TLC. Silica gel was used in vacuum chromatography and TLC. Silica gel was used in column chromatography.

정의

A gel made by coagulating sodium silicate sol. The gel is dried by heatheating and used as a catalyst support and as a drying agent. The silica gel used in desiccators and in packaging to remove moisture is often colored with a cobalt salt to indicate whether it is still active (blue=dry; pink=moist).

정의

A rigid gel made by coagulatinga sol of sodium silicate andheating to drive off water. It is usedas a support for catalysts and also asa drying agent because it readily absorbsmoisture from the air. The gelitself is colourless but, when used indesiccators, etc., a blue cobalt salt isadded. As moisture is taken up, thesalt turns pink, indicating that thegel needs to be regenerated (by heating).

농업용

A hard granular hygroscopic form of hydrated silica is called silica gel. It is made by heating a coagulated sol of sodium silicate. It is used as a catalyst and a desiccant.

잠재적 노출

Amorphous fumed silica is used as a mineral, natural or synthetic fiber. A potential danger to those involved in the production and handling of fumed silica for paint pigments or catalysts. Diatomaceous earth is used in clarifying liquids, in manufacture of fire brick and heat insulators; used as a filtering agent; as a filler in construction materials; pesticides, paints, and varnishes. A potential danger to those involved in mining of diatomaceous earth or fabrication of products there from.

Purification Methods

Before use as a drying agent, silica gel is heated in an oven, then cooled in a desiccator. Conditions in the literature range from heating at 110o for 15hours to 250o for 2-3hours. Silica gel has been purified by washing with hot acid (in one case successively with aqua regia, conc HNO3, then conc HCl; in another case it was digested overnight with hot conc H2SO4), followed by exhaustive washing with distilled water (one week in a Soxhlet apparatus has also been used), and prolonged oven drying. Alternatively, silica gel has been extracted with acetone until all soluble material was removed, then dried in a current of air, washed with distilled water and oven dried. Silica gel has also been washed successively with water, M HCl, water, and acetone, then activated at 110o for 15hours. Silicon monoxide [10097 -28 -6] M 44.1, m > 1700o, d 4 2.18. Purify the monoxide by sublimation in a porcelain tube in a furnace at 1250o (4hours) in a high vacuum (10-4mm) in a stream of N2. It is obtained as brownish black scales. [Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 696 1963.]

비 호환성

Silica, amorphous is a noncombustible solid. Generally unreactive chemically. Incompatible with fluorine, oxygen difluoride, chlorine trifluoride. Soluble in molten alkalis and reacts with most metallic oxides at high temperature.

폐기물 처리

Sanitary landfill.

실리카겔 준비 용품 및 원자재

원자재

준비 용품


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