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크롬산 칼륨

크롬산 칼륨
크롬산 칼륨 구조식 이미지
카스 번호:
7789-00-6
한글명:
크롬산 칼륨
동의어(한글):
디칼륨모노크롬산;디칼륨크롬산;비칼륨크롬산;중성의칼륨크롬산;칼륨크롬산(VI);크롬산칼륨;타라파카이트;단크롬산칼륨;알칼리의크롬산;알칼리의크롬산;타라파카이트;비칼륨크롬산;디칼륨모노크롬산;칼륨크롬산(VI;포타슘크로메이트
상품명:
Potassium chromate
동의어(영문):
CHROMATE;BETZ 0213;tarapacaite;Chromium(VI);Chromate, CrO;chromateofpotash;chromateofpotass;CHROMATE STANDARD;potassiumchromate6;CHROMATE INDICATOR
CBNumber:
CB6398284
분자식:
CrK2O4
포뮬러 무게:
194.1903
MOL 파일:
7789-00-6.mol

크롬산 칼륨 속성

녹는점
971 °C(lit.)
밀도
1.00 g/mL at 20 °C
증기 밀도
6.7 (vs air)
저장 조건
2-8°C
용해도
H2O: soluble
물리적 상태
Solid
색상
Yellow
Specific Gravity
2.732
수소이온지수(pH)
9.0-9.8 (50g/l, H2O, 20℃)
수용성
640 g/L (20 ºC)
Merck
14,7622
안정성
Stable. Strong oxidizing agent - contact with combustible materials may lead to fire or violent reaction. Incompatible with strong reducing agents, combustible materials.
CAS 데이터베이스
7789-00-6(CAS DataBase Reference)
EPA
Chromic acid (H2CrO4), dipotassium salt(7789-00-6)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 T,N,O
위험 카페고리 넘버 49-46-43-51/53-8-50/53-36/37/38-22-45-52/53-25-42/43-20
안전지침서 53-45-60-61-36/37-26-23
유엔번호(UN No.) UN 3288 6.1/PG 3
WGK 독일 3
RTECS 번호 GB2940000
TSCA Yes
위험 등급 5.1
포장분류 III
HS 번호 28415000
유해 물질 데이터 7789-00-6(Hazardous Substances Data)
그림문자(GHS):
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H301 삼키면 유독함 급성 독성 물질 - 경구 구분 3 위험 P264, P270, P301+P310, P321, P330,P405, P501
H315 피부에 자극을 일으킴 피부부식성 또는 자극성물질 구분 2 경고 P264, P280, P302+P352, P321,P332+P313, P362
H317 알레르기성 피부 반응을 일으킬 수 있음 피부 과민성 물질 구분 1 경고 P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H319 눈에 심한 자극을 일으킴 심한 눈 손상 또는 자극성 물질 구분 2A 경고 P264, P280, P305+P351+P338,P337+P313P
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
H340 유전적인 결함을 일으킬 수 있음 (노출되어도 생식세포 유전독성을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 생식세포 변이원성 물질 구분 1A, 1B 위험
H350 암을 일으킬 수 있음 (노출되어도 암을 일으키지 않는다는 결정적인 증거가 있는 노출경로가 있다면 노출경로 기재) 발암성 물질 구분 1A, 1B 위험
H400 수생생물에 매우 유독함 수생 환경유해성 물질 - 급성 구분 1 경고 P273, P391, P501
H410 장기적 영향에 의해 수생생물에 매우 유독함 수생 환경유해성 물질 - 만성 구분 1 경고 P273, P391, P501
예방조치문구:
P201 사용 전 취급 설명서를 확보하시오.
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P273 환경으로 배출하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P391 누출물을 모으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P308+P313 노출 또는 접촉이 우려되면 의학적인 조치· 조언를 구하시오.
P333+P313 피부자극성 또는 홍반이 나타나면 의학적인 조치·조언를 구하시오.
P405 밀봉하여 저장하시오.

크롬산 칼륨 C화학적 특성, 용도, 생산

화학적 성질

lemon-yellow crystals

화학적 성질

Potassium chromate(VI) is a yellow crystalline solid.

용도

It is used as an oxidizing agent.

용도

Has a limited application in enamels, finishing leather, rustproofing of metals, being replaced by the sodium salt; as reagent in analytical chemistry.

정의

A salt containing the ionCrO42-.

정의

potassium chromate: A bright yellowcrystalline solid, K2CrO4, solublein water and insoluble in alcohol;rhombic; r.d. 2.73; m.p. 968.3°C; decomposes without boiling. It is producedindustrially by roasting powderedchromite ore with potassiumhydroxide and limestone and leachingthe resulting cinder with hotpotassium sulphate solution. Potassiumchromate is used in leatherfinishing, as a textile mordant, and inenamels and pigments. In the laboratoryit is used as an analyticalreagent and as an indicator. Likeother chromium(III) compounds it istoxic when ingested or inhaled.

정의

ChEBI: A potassium salt consisting of potassium and chromate ions in a 2:1 ratio.

일반 설명

Potassium chromate is a yellow crystalline solid. Potassium chromate is soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Potassium chromate is used in chemical analysis, in making pigments for paints and inks, as a fungicide, and to make other chromium compounds.

공기와 물의 반응

Soluble in water.

반응 프로필

Oxidizing agents, such as Potassium chromate , can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). The chemical reduction of materials in this group can be rapid or even explosive, but often requires initiation (heat, spark, catalyst, addition of a solvent). Explosive mixtures of inorganic oxidizing agents with reducing agents often persist unchanged for long periods if initiation is prevented. Such systems are typically mixtures of solids, but may involve any combination of physical states. Some inorganic oxidizing agents are salts of metals that are soluble in water; dissolution dilutes but does not nullify the oxidizing power of such materials. Organic compounds, in general, have some reducing power and can in principle react with compounds in this class. Actual reactivity varies greatly with the identity of the organic compound. Inorganic oxidizing agents can react violently with active metals, cyanides, esters, and thiocyanates.

위험도

Toxic by ingestion and inhalation.

건강위험

Inhalation causes local irritation of mucous membranes; continuing nose irritation can result in perforation of nasal septum. Ingestion may cause violent gastroenteritis, circulatory collapse, vertigo, coma, and toxic nephritis; ingestion of excessive quantities can be fatal. Contact with eyes causes severe irritation and conjunctivitis. Repeated or prolonged exposure to dust, mist, or solutions may cause dermatitis; contact with breaks in the skin may cause ``chrome sores'' appearing as slow-healing, hard-rimmed ulcers which leave the area vulnerable to infection.

화재위험

Behavior in Fire: May increase intensity of fire if in contact with combustible materials. Cool containers and spilled material with plenty of water.

Safety Profile

Confirmed carcinogen with experimental tumorigenic data. Poison by ingestion, intravenous, subcutaneous, and intramuscular routes. An experimental teratogen. Other experimental reproductive effects. Human mutation data reported. A powerful oxidizer. When heated to decomposition it emits toxic fumes of K2O. Used as a mordant for wool, in the oxidizing and treatment of dyes on materials. See also CHROMIUM COMPOUNDS.

잠재적 노출

Potassium chromate is used in printing: photomechanical processing; chrome-pigment production; and wool preservative methods; to make dyes, pigments, inks and enamels; as an oxidizing agent; analytical reagent; in electroplating; explosives.

응급 처치

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

운송 방법

UN1479 Oxidizing solid, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, Technical Name Required. UN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required

Purification Methods

Crystallise it from conductivity water (0.6g/mL at 20o), and dry it between 135o and 170o.

비 호환성

A powerful oxidizer. Violent reactions with combustibles, organics, powdered metals; or easily oxidizable substances. Contact with hydroxylamine, hydrazine causes explosion.

크롬산 칼륨 준비 용품 및 원자재

원자재

준비 용품


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