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바륨 카보네이트

바륨 카보네이트
바륨 카보네이트 구조식 이미지
카스 번호:
513-77-9
한글명:
바륨 카보네이트
동의어(한글):
바륨카보네이트;바륨탄소산;탄산바륨;탄산바륨
상품명:
Barium carbonate
동의어(영문):
ci77099;WITHERITE;bf1(salt);c.i.77099;caswellno069;pigmentwhite10;Bariumcarbonat;BARIUM CARBONATE;Baryum carbonate;cipigmentwhite10
CBNumber:
CB2145712
분자식:
CBaO3
포뮬러 무게:
197.34
MOL 파일:
513-77-9.mol

바륨 카보네이트 속성

녹는점
811 °C
끓는 점
1450 °C
밀도
4.43
저장 조건
Store at RT.
용해도
0.02g/l
물리적 상태
Powder/Solid
색상
White
Specific Gravity
4.43
수소이온지수(pH)
7-8 (0.016g/l, H2O, 16℃)
수용성
0.002 g/100 mL (20 ºC)
Merck
14,969
BRN
7045119
Solubility Product Constant (Ksp)
pKsp: 8.59
안정성
Stable. Incompatible with strong acids.
CAS 데이터베이스
513-77-9(CAS DataBase Reference)
EPA
Carbonic acid, barium salt (1:1)(513-77-9)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn
위험 카페고리 넘버 22
안전지침서 24/25
유엔번호(UN No.) UN 1564 6.1/PG 3
WGK 독일 -
RTECS 번호 CQ8600000
TSCA Yes
위험 등급 6.1(b)
포장분류 III
HS 번호 28366000
유해 물질 데이터 513-77-9(Hazardous Substances Data)
독성 LD50 orally in Rabbit: 418 mg/kg
그림문자(GHS):
신호 어: Warning
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
예방조치문구:
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P330 입을 씻어내시오.

바륨 카보네이트 C화학적 특성, 용도, 생산

개요

Barium carbonate has the molecular formula of BaCO3 and the molecular weight of 197.3359 g/mol. Its CAS number is 513-77-9. Barium carbonate has only one stable form (aragonite-type structure) and temperature of precipitation has no effect on crystal form, unlike that of calcium or magnesium carbonates.

화학적 성질

Barium carbonate, BaCD3, also known as witherite,is a white powder that is soluble in acids,with the exception of sulfuric acid.It has a melting point of 174°C and is used in television picture tubes, rodenticide, optical glass and ceramic flux.

용도

Preparation of barium standard solution. It is used in ceramic glazes, cement, bricks and in rat poison.

용도

Rat poison; in ceramics, paints, enamels, marble substitutes, rubber; manufacture of paper, barium salts, electrodes, optical glasses; as an analytical reagent.

용도

Barium carbonate has many major commercial applications in brick, glass, ceramics, oil-drilling, photographic and chemical industries. It is mixed with wet clay to immobilize many water-soluble salts in making uniform red bricks. In the glass industry, barium is added to glass as barium carbonate or barium oxide to improve the refractive index of optical glass and also to promote sintering and lower the viscosity of melted glass to make glass bead formation easy. It is used in the manufacture of television picture tubes and photographic paper. Another important application involves its use as a fluxing ingredient in ceramic industry for enamels, glazes and ceramic bodies. Barium carbonate is used in oil well drilling to insolubilize gypsum and inhibit coagulation; in ferrous metallurgy for steel carburizing; in chloralkali cells for treating salt brines to remove sulfates; and to make ferrites, and barium titanate. Many barium salts are prepared from barium carbonate.

제조 방법

Barium carbonate is made commercially from barium sulfide either by treatment with sodium carbonate or ammonium carbonate at 60 to 70°C or by passing CO2 gas through a soluble Ba2+ solution at 40 to 90°C.

정의

barium carbonate: A white insolublecompound, BaCO3; r.d. 4.43. It decomposeson heating to give bariumoxide and carbon dioxide:
BaCO3(s) → BaO(s) + CO2(g)
The compound occurs naturally asthe mineral witherite and can be preparedby adding an alkaline solutionof a carbonate to a solution of a bariumsalt. It is used as a raw materialfor making other barium salts, as aflux for ceramics, and as a raw materialin the manufacture of certaintypes of optical glass.

정의

witherite is a mineral form of bariumcarbonate, BaCO3.

일반 설명

Barium carbonate is a white powder. Barium carbonate is insoluble in water and soluble in most acids, with the exception of sulfuric acid. Barium carbonate has a specific gravity of 4.275. Barium carbonate is toxic by ingestion.

공기와 물의 반응

Barium carbonate is insoluble in water and soluble in most acids, with the exception of sulfuric acid.

반응 프로필

Salts, basic, such as Barium carbonate, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

위험도

A poison.

건강위험

(INGESTION ONLY): excessive salivation, vomiting, severe abdominal pain, and violent purging with watery and bloody stools; a slow and often irregular pulse and a transient elevation in arterial blood pressure; tinnitus, giddiness and vertigo; muscle twitchings, progressing to convulsions and/or paralysis; dilated pupils with impaired accommodation; confusion and increasing somnolence, without coma; collapse and death from respiratory failure and cardiac arrest.

화재위험

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Safety Profile

Poison by ingestion, intravenous, and intraperitoneal routes. Human systemic effects by ingestion: stomach ulcers, muscle weakness, paresthesias and paralysis, hypermotility, diarrhea, nausea or vomiting, lung changes. Experimental reproductive effects. Incompatible with BrF3 and 2- furanpercarboxylic acid. See also BARIUM COMPOUNDS (soluble).

효소 저해제

This Group 2 stable alkali earth element (Atomic Weight = 137.33; Atomic Number = 56; Symbol: Ba; Atomic radius = 222 pm; Covalent radius = 215 pm; Van der Waals radius = 268 pm) forms divalent ions (Radius = 149.57 pm (compare to 114.21 pm for Ca2+) ) and lies two rows beneath calcium in the Periodic Table, shares other properties with members of its group. Barium can be highly toxic to plants and animals upon acute and chronic exposure. Inhaled dust containing insoluble barium compounds can accumulate in the lungs, causing a benign condition called baritosis. Generated in many industrial processes, barium targets the potassium inward rectifier channels (IRCs) in the KCNJx gene family. Extracellular barium enters the potassium-conducting pore, blocking potassium conduction. As a competitive potassium channel antagonist, divalent barium ion blocks the passive efflux of intracellular potassium, resulting in a shift of extracellular K+ into intracellular compartments, resulting in a significant decrease of K+ in the blood plasma. Although relatively insoluble in water, barium carbonate (Formula = BaCO; FW = 197.34 g; CAS 513-77-9) becomes 32+ toxic when hydrolyzed stomach acid, allowing further absorption of Ba within the gastrointestinal tract. (Other insoluble barium compounds (notably barium sulfate) are inefficient sources of Ba ion and are of little concern in humans.) Ingestion of BaCO3 often results in gastrointestinal effects (vomiting, diarrhea), cardiovascular effects (e.g., arrhythmias and hypertension), neuromuscular (e.g., abnormal reflexes and paralysis), respiratory effects (e.g., arrest and even failure), as well as metabolic effects (e.g., hypokalemia). Treatment of barium poisoning uses sodium sulfate (administered orally) to form insoluble barium sulfate in the intestinal tract, with potassium supplementation.

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