칼슘 아질산염

칼슘 아질산염
칼슘 아질산염 구조식 이미지
카스 번호:
13780-06-8
한글명:
칼슘 아질산염
동의어(한글):
칼슘아질산염;아질산칼슘;칼슘나이트라이트;칼슘아질산염(CALCIUMNITRITE);칼슘 나이트라이트;아질산 칼슘;아질산 칼슘 (Ca(NO2)2);아질산, 칼슘 염;아질산, 칼슘 염 (2:1);이아질산 칼슘;칼슘디아질산염
상품명:
Calcium nitrite
동의어(영문):
Daraset;CALCIUM NITRITE;cium nitrite soL;Calcium dinitrite;Nitrousacid,calciumsalt;calcium nitrite solution;CALCIUM NITRITE ANHYDROUS;CalciumNitriteCa(NO3)2*4H2O;Nitrous acid, calcium salt (2:1);Calcium nitrite ISO 9001:2015 REACH
CBNumber:
CB6709679
분자식:
CaN2O4
포뮬러 무게:
132.09
MOL 파일:
13780-06-8.mol
MSDS 파일:
SDS

칼슘 아질산염 속성

녹는점
390 °C
밀도
2.23
굴절률
n20/D 1.3946
인화점
110 °C
용해도
에탄올에 약간 용해됨
물리적 상태
흰색-노란색 육각형 결정
색상
white-yellow hexagonal, hexane crystals, crystalline; hygroscopic
수용성
난용성 알코올[MER06]; g/100g 용액 H2O: 38.3(0°C), 43.0(18.5°C), 71.2(91°C); 고체상 Ca(NO2)2 · 4H2O (0°C, 18.5°C), Ca(NO2)2 ·2H2O (91°C) [KRU93]
Merck
13,1688
LogP
-2.52 at 20℃
CAS 데이터베이스
13780-06-8(CAS DataBase Reference)
EPA
Calcium nitrite (13780-06-8)
안전
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
안전지침서 23-24/25
WGK 독일 3
기존화학 물질 KE-04583
유해화학물질 필터링 97-1-167
함량 및 규제정보 물질구분: 유독물질; 혼합물(제품)함량정보: 아질산 염류 및 이를 25% 이상 함유한 혼합물
그림문자(GHS): GHS hazard pictogramsGHS hazard pictograms
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 GHS hazard pictograms P264, P270, P301+P310, P321, P330,P405, P501
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 GHS hazard pictograms P280, P305+P351+P338, P310
예방조치문구:
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P301+P310 삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P310 즉시 의료기관(의사)의 진찰을 받으시오. 삼켰다면 즉시 의료기관(의사)의 도움을 받으시오.
P321 (…) 처치를 하시오.
P330 입을 씻어내시오.
P405 밀봉하여 저장하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.

칼슘 아질산염 MSDS


Calcium nitrite

칼슘 아질산염 C화학적 특성, 용도, 생산

개요

Calcium nitrite has the formula of Ca(NO2)2 and the molecular weight of 132.0894 g/mol. It can be made by the usual double decomposition reaction of sodium nitrite and CaCl2. It forms a tetrahydrate that is isomorphous with the strontium and barium salts:
2Na2NO2 (aq) + CaCl2 ? Ca(NO2)2 (aq) + 4NaCl (aq)

화학적 성질

white or yellowish deliquescent, hexagonal crystal(s); prepared from nitric oxide and a mixture consisting of calcium ferrate and calcium nitrate; used to inhibit corrosion in lubricants and concrete [MER06]

물리적 성질

Calcium nitrite, Ca(NO2)2, has the CAS number of 13780-06-8 and occurs as yellow-white crystals. It is very hygroscopic. Its density is 2.23 g/cm3 and it decomposes at 392°C to form nitrogen oxides and CaO. It is slightly soluble in alcohol. Ca(NO2)2·4H2O loses two waters of hydration at about 80°C and one at 105°C to form the monohydrate. It loses the other at about 155°C. The anhydrate, if further heated, is unstable and oxidizes to the nitrate in air above 220°C:
Ca(NO2)2 + O2 + heat?Ca(NO3)2

용도

Calcium nitrite has several industrial uses:
1. Calcium nitrite has high solubility, so can be used as a solution or powder in concrete as an “anti-freeze” during winter months as needed. Using this antifreeze at negative temperature can promote the hydration of minerals in cement, and the freezing point of operative temperature can be reduced to –25°C.
2. This salt is a steel rust inhibitor: calcium nitrite can clean steel and protect it from rust, and can protect steel material in concrete used to construct buildings and structures, to extend the useful life of concrete in buildings.
3. In concrete, Ca(NO2)2 acts as a coagulator: calcium nitrite is free of chlorine and alkali, capable to reduce alkali aggregation of concrete and improve its early strength and compressive resistance. The calcium nitrite protects steel reenforcing bars from chlorideinduced corrosion. One advantage to calcium nitrite is that its protection mechanism is well defined. Data are known that show the levels of chloride to which given levels of calcium nitrite will protect. Once corrosion initiates, the rates are lower with calcium nitrite present. These results have been used to produce reinforced concrete structures with durability in excess of 50–100 years.
4. Calcium nitrite can be used as corrosion inhibitor when added to lubricating agents.
5. Calcium nitrite can also be used in pharmaceutical, dyes and metallurgy industries, as a mild reducing agent.

제조 방법

Industrially, calcium nitrite is manufactured by reacting “NOX” gas with “lime”:
Ca(OH)2 + NO +NO2?Ca(NO2)2 +H2O
By carefully controlling calciumnitrite conditions, the selectivity on converted lime, on a molar basis, is over 95% pure. It is soluble in water (98.2 g/100 ml at 20 °C) and the solution must be evaporated at low temperature to obtain the tetrahydrate. If heated with NO2 gas, it also form the nitrate:
Ca(NO2)2 + NO2?Ca(NO3)2 + NO
Anhydrous calcium nitrite is unstable and slowly oxidizes in air to form the nitrate. It is also soluble in alcohol at 0.97 g/100 ml at 20 °C.

일반 설명

Calcium nitrite solution (Ca(NO2)2) is widely utilized as a corrosion inhibitor. It protects the metal surface against chloride attack and increases the threshold level and improves the overall life of the concrete. Ca(NO2)2 does not change the mechanical properties of the cement.

Purification Methods

Crystallise it from hot water (1.4mL/g) by adding ethanol and cooling to give the hydrate. It is deliquescent. [Ray & Ogg J Am Chem Soc 79 265 1957.]

칼슘 아질산염 준비 용품 및 원자재

원자재

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