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플루오로규산

플루오로규산
플루오로규산 구조식 이미지
카스 번호:
16961-83-4
한글명:
플루오로규산
동의어(한글):
규불산,불화규소산,헥사플루오로규산;규불화수소산;플루오로규산;규불화수소산40%;하이드로실리코플루오릭산40%;규불산;불화규산;불화규소산;수소헥사플루오로실리케이트;샌드산;하이드로플루오규산
상품명:
Hexafluorosilicic acid
동의어(영문):
ACTH;ACTH 1-39;Sand acid ;CORTICOTROPHIN;CORTICOTROPIN A;FLUOROSILIC ACID;FLUOSILICIC ACID;Fluorsilicic acid;FLUOROSILICIC ACID;SILICOFLUORIC ACID
CBNumber:
CB3726895
분자식:
F6H2Si
포뮬러 무게:
144.09
MOL 파일:
16961-83-4.mol

플루오로규산 속성

끓는 점
108-109°C
밀도
1.22 g/mL at 25 °C
굴절률
1.3500
인화점
108-109°C
저장 조건
−20°C
용해도
H2O: 1 mg/mL, clear, colorless
물리적 상태
Liquid
색상
Clear colorless
Specific Gravity
1.38 (40%)
수용성
Miscible with water.
Hydrolytic Sensitivity
0: forms stable aqueous solutions
Merck
14,4182
안정성
Stable in aqueous solution.
InChIKey
AUJBMDCSBIPDEH-UHFFFAOYSA-N
CAS 데이터베이스
16961-83-4(CAS DataBase Reference)
EPA
Fluosilicic acid (16961-83-4)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 C
위험 카페고리 넘버 34-35-20/21/22
안전지침서 26-36/37/39-45-27
유엔번호(UN No.) UN 1778 8/PG 2
WGK 독일 3
RTECS 번호 VV8225000
F 고인화성물질 8-10
위험 참고 사항 Corrosive
TSCA Yes
위험 등급 8
포장분류 II
HS 번호 28111990
유해 물질 데이터 16961-83-4(Hazardous Substances Data)
독성 LD50 oral in rat: 430mg/kg
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, P501
H311 피부와 접촉하면 유독함 급성 독성 물질 - 경피 구분 3 위험 P280, P302+P352, P312, P322, P361,P363, P405, P501
H314 피부에 심한 화상과 눈에 손상을 일으킴 피부부식성 또는 자극성물질 구분 1A, B, C 위험 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
예방조치문구:
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P330+P331 삼켰다면 입을 씻어내시오. 토하게 하려 하지 마시오.
P303+P361+P353 피부(또는 머리카락)에 묻으면 오염된 모든 의복은 벗거나 제거하시오 피부를 물로 씻으시오/샤워하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P405 밀봉하여 저장하시오.

플루오로규산 C화학적 특성, 용도, 생산

개요

Hexafluorosilicic acid is a kind of inorganic acid. It is majorly used for the fluoridation of water in United State to minimize the incidence of dental caries and dental fluorosis. For chemical synthesis, it is majorly used for the manufacturing of aluminum fluoride and cryolite as well as many kinds of hexafluorosilicate salts. It can also be used for the production of silicon and silicon dioxide. It can also be used as an electrolyte in the Betts electrolytic process for refining lead. It is also a specialized reagent in organic synthesis for cleaving Si–O bonds of silyl ethers.

화학적 성질

Fluosilicic acid,H2SiF6, also known as hydrofluorosilicic acid,is a colorless liquid that is soluble in water. It is highly corrosive and toxic,attacking glass and stoneware. Fluosilicic acid is used in water fluoridation, electroplating, and in manufacturing enamels and cement.

화학적 성질

Fluorosilicic acid is a transparent, colorless fuming liquid.

용도

A 1-2% solution is used widely for sterilizing equipment in brewing and bottling establishments. Other concentrations are used in the electrolytic refining of lead, in electroplating, for hardening cement, crumbling lime or brick work, for the removal of lime from hides during the tanning process, to remove molds, as preservative for timber.

일반 설명

A colorless fuming liquid with a penetrating pungent odor. Corrosive to metals and tissue. Both the fumes and very short contact with the liquid can cause severe and painful burns. Used in water fluoridation, in hardening cement and ceramics, as a wood preservative.

공기와 물의 반응

Fumes in air. Soluble in water with release of heat and corrosive fumes.

반응 프로필

Hexafluorosilicic acid can react with strong acids (such as sulfuric acid) to release fumes of toxic hydrogen fluoride. Attacks glass and materials containing silica. Reacts exothermically with chemical bases (examples: amines, amides, inorganic hydroxides). Reacts with active metals, including iron and aluminum to dissolve the metal and liberate hydrogen and/or toxic gases. Can initiate polymerization in certain alkenes. Reacts with cyanide salts and compounds to release gaseous hydrogen cyanide. Flammable and/or toxic gases are also often generated by reactions with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents. Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. Can catalyze (increase the rate of) chemical reactions. Decomposes when heated to the boiling point to produce very toxic and corrosive hydrogen fluoride gas.

위험도

Extremely corrosive by skin contact and inhalation.

건강위험

Inhalation of vapor produces severe corrosive effect on mucous membrane. Ingestion causes severe burns of mouth and stomach. Contact with liquid or vapor causes severe burns of eyes and skin.

화재위험

Special Hazards of Combustion Products: Irritating fumes of hydrogen fluoride may form in fire.

공업 용도

Hydrofluorosilicic acid (H2SiF6) is a colorless to light brown liquid. It is also manufactured from calcium fluoride or other fluoride-containing products. Hydrofluorosilic acid is a strong depressant for many silicates during flotation of a number of oxidic minerals. It is used for gangue depression during flotation of tin, columbite and tantalite.

Safety Profile

Poison by subcutaneous route. A corrosive irritant to sktn, eyes, and mucous membranes. Will react with water or steam to produce toxic and corrosive fumes. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES.

잠재적 노출

A solution of fluorosilicic acid is used for sterilization in the brewing and bottling industry, elec trolytic refining of lead; electroplating, hardening cement; removing mold, and others.

운송 방법

UN1778 Fluorosilicic acid, Hazard class: 8; Labels: 8-Corrosive material.

비 호환성

The aqueous solution is a strong acid. Reacts with water or steam to produce toxic and corrosive fumes of hydrogen fluoride. Incompatible, and may react violently with: bases, aliphatic amines; alkanolamines, alkylene oxides; aromatic amines; amides, ammonia, ammonium hydroxide; calcium oxide; epichlorohydrin, iso cyanates, oleum, organic anhydrides; sulfuric acid; strong oxidizers; vinyl acetate; water. Attacks glass, concrete, and ceramics. The anhydrous form dissociates almost instantly into silicon tetrafluoride and hydrogen fluoride.

폐기물 처리

Add slowly to a large amount of soda ash in solution. Discharge to sewer with large volumes of water

참고 문헌

Robinson, Tim. "Innovative Processes in Electrometallurgy." Innovative Process Development in Metallurgical Industry. Springer International Publishing, 2016. 385- 392.
Sarawade, Pradip B., et al. "Recovery of high surface area mesoporous silica from waste hexafluorosilicic acid (H 2 SiF 6) of fertilizer industry." Journal of hazardous materials 173.1 (2010): 576-580.
Kauffman, Joel M. "Water fluoridation: a review of recent research and actions." Journal of American Physicians and Surgeons 10.2 (2005): 38.
Krot, V. V., et al. "ChemInform Abstract: Preparation of Amorphous Silicon Dioxide from Hexafluorosilicic Acid." Cheminform 23.48(1992):no-no.
Zorya, L., and V. Krot. "Method of high-purity silica production from hexafluorosilicic acid." Reaction Kinetics & Catalysis Letters 50.1-2(1993):349-354.

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