중크롬산나트륨
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중크롬산나트륨 속성
- 녹는점
- 91 °C(lit.)
- 끓는 점
- 400°C
- 밀도
- 2,348 g/cm3
- 증기 밀도
- 10 (vs air)
- 저장 조건
- Store at +5°C to +30°C.
- 용해도
- 메탄올(약간 용해됨,초음파 처리)
- 물리적 상태
- 고체
- 물리적 상태
- 단단한 모양
- Specific Gravity
- 2.348
- 색상
- 붉은 오렌지색
- 냄새
- 냄새 없는
- pH 범위
- 3.5-4.0
- 수용성
- 730g/L(20℃)
- 감도
- Hygroscopic
- Merck
- 14,8609
- Dielectric constant
- 2.9（Ambient）
- CAS 데이터베이스
- 7789-12-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | O,T+,N | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53 | ||
| 안전지침서 | 53-45-60-61 | ||
| 유엔번호(UN No.) | UN 3086 6.1/PG 1 | ||
| WGK 독일 | 3 | ||
| RTECS 번호 | HX7750000 | ||
| TSCA | Yes | ||
| 위험 등급 | 5.1 | ||
| 포장분류 | III | ||
| HS 번호 | 28413000 | ||
| 유해화학물질 필터링 | 99-1-506;06-5-10 | ||
| 중점관리물질 필터링 | 별표1-139 | ||
| 함량 및 규제정보 | 물질구분: 제한물질; 혼합물(제품)함량정보: 크로뮴(6+)화합물 및 이를 0.1% 이상 함유한 혼합물 |
중크롬산나트륨 C화학적 특성, 용도, 생산
화학적 성질
Orange-yellow powder. Soluble in acids and hot water; insoluble in alcohol and ether.용도
Sodium Dichromate Dihydrate is used as a catalyst in the synthesis of Endoperoxide II. Strong oxidizing agent in organic synthesis. Used in metal finishing as an aid in corrosion resistance.정의
A red crystallinesolid, Na2Cr2O7.2H2O, solublein water and insoluble in ethanol. Itis usually known as the dihydrate(r.d. 2.52), which starts to lose waterabove 100°C; the compound decomposesabove 400°C. It is made bymelting chrome iron ore with limeand soda ash and acidification of thechromate thus formed. Sodiumdichromate is cheaper than the correspondingpotassium compound buthas the disadvantage of being hygroscopic.It is used as a mordant in dyeing,as an oxidizing agent in organicchemistry, and in analytical chemistry.일반 설명
Solid orange-yellow crystal or powder.공기와 물의 반응
Water soluble (hot water).반응 프로필
Sodium dichromate dihydrate 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). Reactions may be rapid but often requires initiation (heat, spark, catalyst, addition of a solvent). Can react violently with active metals, cyanides, esters, and thiocyanates.위험도
Toxic by ingestion and inhalation.건강위험
INHALATION: Corrosive to mucous membranes continuous exposure may lead to perforation of nasal septum. EYES: Conjunctivitis and lacrimation. SKIN: Corrosive producing deep penetrating ulcers to exposed area. Slow to heal. INGESTION: Has a harsh metallic taste. May cause vertigo, thirst, abdominal pain, vomiting, shock, convulsions and coma.잠재적 노출
Used to make dyes, inks, pigments, and other chromates; in leather tanning, a corrosion inhibitor in circulating water systems; metal treatment; a drilling mud additive; chemical intermediate for chromium catalysts; colorimetry, oxidizing agent; bleaching agent; an algicide, fungicide, insecticide; in wood preservation.운송 방법
UN3087 Oxidizing solid, toxic, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, 6.1-Poisonous materials, Technical Name Required. UN3085 Oxidizing solid, corrosive, n.o.s., Hazard Class: 5.1; Labels: 5.1-Oxidizer, 8-Corrosive material, Technical Name Required.Purification Methods
Crystallise the dichromate from small volumes of H2O by evaporation to crystallisation. Its solubility in H2O is 238% at 0o and 508% at boiling. The red dihydrate is slowly dehydrated by heating at 100o for long periods. It is deliquescent and is a powerful oxidising agent—do not place it in contact with skin— wash immediately as it is caustic. (Possible carcinogen.) Sodium dihydrogen orthophosphate ( 2 H2O) [13472-35-0 (2H2O), 10049-21-5 (H2O), 7558-80-7 (anhydrous)] M 156.0, m 60o(dec), d 4 1.91. Crystallise it from warm water (0.5mL/g) by chilling.비 호환성
Aqueous solution in a base. A strong oxidizer. Violent reaction with reducing agents; combustibles, strong acids; organic materials.중크롬산나트륨 준비 용품 및 원자재
원자재
HEAVY CUT RESIDUE OIL
석회석
황산 나트륨
Chrome iron ore
돌로마이트
산화크로뮴
수산화알루미늄분말
황산
탄산나트륨(경회)
백운석(CaMg(CO3)2),연소내화물
준비 용품
ACID BLUE 15
1-(2,6-디메틸페녹시)아세톤
트리메틸퀴논
크롬산 납
Dehydrocholic acid
4-아미노-1,8-나프탈이미드
크롬산 스트론슘
C.I. 산 바이올렛 17, 나트륨 염
6-CARBOXY-2,4-DIHYDROXYPYRIMIDINE MONOSODIUM SALT
메틸렌블루
hydrogen [4-[[4-(diethylamino)phenyl][4-[ethyl[(3-sulphonatobenzyl)amino]-o-tolyl]methylene]-3-methylcyclohexa-2,5-dien-1-ylidene](ethyl)(3-sulphonatobenzyl)ammonium, sodium salt
ferric chomium lignin sulfonate
피레녹신
크롬 염화물, 6수화물
1,2,4-Trimethoxybenzene
ChroMiuM(III) sulfate hydrate
메나디온
Pale chrome yellow
Lemon chrome yellow 501
(2,6-DIMETHYLPHENOXY)아세톡심
water-proofing agnet AC
sulfomethylated gallnuat sodium tannic acid
페난트렌퀴논
Acenaphthenequinone
Methyl 4-aminopyridine-3-carboxylate
9-플루오레논-2-카르복실 산
히드록시 황산 크롬
103 chrome yellow
크롬산 나트륨, 테트라수화물
Potassium orotate
LITHIUM DICHROMATE
크롬산 나트륨
4,5-디클로로나프탈렌-1,8-디카르복실산무수물
4-니트로-1,8-나프탈렌디카르복실산
Basic chromic sulfate
황연
프로베네시드
acidizig fluid gelling agent CT^{1～6^}
패스트그린FCF
다이크로뮴산 암모늄