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석회질소 구조식 이미지
카스 번호:
Calcium cyanamide
포뮬러 무게:
MOL 파일:

석회질소 속성

>300 °C(lit.)
물리적 상태
Gray to dark gray
Specific Gravity
insoluble H2O, but undergoes hydrolysis releasing acetylene and ammonia [HAW93] [MER06]
Moisture Sensitive
CAS 데이터베이스
156-62-7(CAS DataBase Reference)
Cyanamide, calcium salt (1:1)(156-62-7)
  • 위험 및 안전 성명
  • 위험 및 사전주의 사항 (GHS)
위험품 표기 Xn,F
위험 카페고리 넘버 22-37-41-15-43-37/38
안전지침서 26-39-43-36/37/39-22-45-28
유엔번호(UN No.) UN 1403 4.3/PG 3
WGK 독일 2
RTECS 번호 GS6000000
F 고인화성물질 9-21
위험 등급 4.3
포장분류 III
HS 번호 31029010
유해 물질 데이터 156-62-7(Hazardous Substances Data)
신호 어: Danger
유해·위험 문구:
암호 유해·위험 문구 위험 등급 범주 신호 어 그림 문자 P- 코드
H261 물과 접촉시 인화성가스를 발생시킴 물반응성 물질 및 혼합물 구분 2
구분 3
P231+P232, P280, P370+P378,P402+P404, P501
H302 삼키면 유해함 급성 독성 물질 - 경구 구분 4 경고 P264, P270, P301+P312, P330, 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
H318 눈에 심한 손상을 일으킴 심한 눈 손상 또는 자극성 물질 구분 1 위험 P280, P305+P351+P338, P310
H335 호흡 자극성을 일으킬 수 있음 특정 표적장기 독성 - 1회 노출;호흡기계 자극 구분 3 경고
H411 장기적 영향에 의해 수생생물에 유독함 수생 환경유해성 물질 - 만성 구분 2
P261 분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.
P264 취급 후에는 손을 철저히 씻으시오.
P264 취급 후에는 손을 철저히 씻으시오.
P270 이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.
P271 옥외 또는 환기가 잘 되는 곳에서만 취급하시오.
P273 환경으로 배출하지 마시오.
P280 보호장갑/보호의/보안경/안면보호구를 착용하시오.
P231+P232 불활성 기체 하에서 취급하고, 습기를 방지하시오.
P391 누출물을 모으시오.
P304+P340 흡입하면 신선한 공기가 있는 곳으로 옮기고 호흡하기 쉬운 자세로 안정을 취하시오.
P305+P351+P338 눈에 묻으면 몇 분간 물로 조심해서 씻으시오. 가능하면 콘택트렌즈를 제거하시오. 계속 씻으시오.
P333+P313 피부자극성 또는 홍반이 나타나면 의학적인 조치·조언를 구하시오.
P370+P378 화재 시 불을 끄기 위해 (Section 5. 폭발, 화재시 대처방법의 적절한 소화제)을(를) 사용하시오.
P405 밀봉하여 저장하시오.
P402+P404 건조한 장소에 보관하시오. 밀폐된 용기에 보관하시오.
P403+P233 용기는 환기가 잘 되는 곳에 단단히 밀폐하여 저장하시오.
P501 ...에 내용물 / 용기를 폐기 하시오.

석회질소 C화학적 특성, 용도, 생산

화학적 성질

Calcium cyanamide is a blackish-gray, shiny crystalline material or powder.


As fertilizer, defoliant, herbicide, pesticide; manufacture of and refining of iron; manufacture of calcium cyanide, melamine, dicyandiamide.


ChEBI: The calcium salt of cyanamide, formed when calcium carbide reacts with nitrogen


calcium cyanamide: A colourlesssolid, CaCN2, which sublimes at1300°C. It is prepared by heating calciumdicarbide at 800°C in a streamof nitrogen:
CaC2(s) + N2(g) → CaCN2(s) + C(s)
The reaction has been used as amethod of fixing nitrogen in countriesin which cheap electricity isavailable to make the calcium dicarbide(the cyanamide process). Calciumcyanamide can be used as afertilizer because it reacts with waterto give ammonia and calcium carbonate:
CaCN2(s) + 3H2O(l) → CaCO3(s) +2NH3(g)
It is also used in the production ofmelamine, urea, and certain cyanidesalts.

일반 설명

A colorless to gray, odorless solid. May cause illness from ingestion. May irritate the skin. If exposed to water or high temperatures, calcium cyanamide may generate toxic and flammable fumes. Used to make pesticides and in fertilizers.

공기와 물의 반응

Depending on the calcium carbide content, the cyanamide reacts with water (moisture from air or soil) to produce acetylene and hydrated calcium oxide or calcium hydroxide. Absorption of water during handling or storage of technical calcium cyanamide may cause explosion [Pieri, M. Chem. Abs. 46, 8335 1952].

반응 프로필

When hydrated CALCIUM CARBIDE generates salts of calcium that are basic and 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.


Fire risk with moisture or combined with calcium carbide. Skin, eye, and upper respiratory tract irritant. Questionable carcinogen.


Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.


Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.


Calcium cyanamide (CaCN2) is a dark colored, granulated material containing around 21 % nitrogen. Its dark color is due to the presence of calcium carbide. Calcium cyanamide is produced by heating a mixture of limestone with coal in a nitrogen atmosphere.
Generally, the process is carried out in three steps. In the first step, calcium carbonate (limestone) is decomposed at about 1100°C.
In the second step, calcium oxide (CaO) and coke (or coal) are heated in an electric furnace to produce calcium carbide.
The final step involves heating the powdered calcium carbide at about 1100°C with pure nitrogen (produced by liquefaction of air and fractional distillation) to produce calcium cyanamide.
The fertilizer-grade calcium cyanamide contains 21 % nitrogen, 11 % calcium, 11 % free carbon, 5% oil, 2 to 4% water and oxides of aluminum, iron and silicon. In the presence of moisture and air, calcium dicyandiamide (a poisonous compound) is formed. It distinctly leaves alkalinity in the soil equivalent to 1.3 kg calcium carbonate (CaCO3) per 0.45 kg of nitrogen applied. At pH 7 or below, calcium dicyandiamide is converted into urea and lime within one week of its being in the soil.
When dry, calcium cyanamide is dusty but it is generally used as granules. It is poisonous, irritating to the skin and used as a pesticide, fertilizer and defoliant in cotton. It is as good a fertilizer as sodium nitrate or ammonium sulphate, but not as fast acting.
Calcium cyanamide is an excellent weed killer, especially for tobacco plants, when applied 2 to 3 weeks before sowing. It is also used for producing melamine, urea and certain cyanide salts.

Safety Profile

Poison by ingestion, inhalation, sh contact, intravenous, and intraperitoneal routes. Moderately toxic to humans by ingestion. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. The fatal dose, by ingestion, is probably around 20 to 30 g for an adult. It does not have a cyanide effect. Calcium cyanamide is not believed to have a cumulative action. Flammable. Reaction with water forms the explosive acetylene gas. When heated to decomposition it emits toxic fumes of NOx and CN-. See also CALCIUM COMPOUNDS, AMIDES, and CYANIDE

잠재적 노출

Calcium cyanamide is used in agriculture as a fertilizer, herbicide; defoliant for cotton plants; and pesticide. It is also used in the manufacture of dicyandiamide and calcium cyanide as a desulfurizer in the iron and steel industry; and in steel hardening.

운송 방법

UN1403 Calcium cyanamide with .1% calcium carbide, Hazard Class: 4.3; Labels: 4.3-Dangerous when wet material

비 호환성

Commercial grades of calcium cyanamide may contain calcium carbide; contact with any form of moisture solutions may cause decomposition, liberating explosive acetylene gas and ammonia. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. May polymerize in water or alkaline solutions to dicyanamide. Contact with all solvents tested also causes decomposition

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