CALCIUM CYANAMIDE
calcium cyanamide
CAS: 156-62-7
Molecular Formula: CCaN2
CALCIUM CYANAMIDE - Names and Identifiers
| Name | calcium cyanamide |
| Synonyms | nitrolime calcium carbimide CALCIUM CYANAMIDE calcium cyanamide Calcium carbimide calcium cyanarnide (cyanoimino)calcium CYANAMIDE CALCIUM SALT calcium cyanamide, tech. CALCIUMCYANAMIDE,TECHNICAL CYANAMIDE, CALCIUM DERIVATIVE Cyanamide calcium derivative, Cyanamide calcium salt |
| CAS | 156-62-7 |
| EINECS | 205-861-8 |
| InChI | InChI=1/CH2N2.Ca/c2-1-3;/h2H2;/q;+2 |
| InChIKey | QFSRQFUIHVTIDL-UHFFFAOYSA-N |
CALCIUM CYANAMIDE - Physico-chemical Properties
| Molecular Formula | CCaN2 |
| Molar Mass | 80.1 |
| Density | 2.29 |
| Melting Point | >300°C(lit.) |
| Water Solubility | insoluble H2O, but undergoes hydrolysis releasing acetylene and ammonia [HAW93] [MER06] |
| Vapor Presure | 0.51Pa at 20℃ |
| Appearance | Powder |
| Specific Gravity | 2.29 |
| Color | Gray to dark gray |
| Merck | 14,1662 |
| BRN | 4124391 |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | The pure character is a colorless hexagonal crystal. Industrial products are dark gray powder due to impurities such as carbon (graphite). There is a smell of calcium carbide or ammonia. melting point 1300 °c solubility insoluble in water. |
| Use | Can be used for the manufacture of cyanide compounds, fertilizers, pesticides, etc |
CALCIUM CYANAMIDE - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R37 - Irritating to the respiratory system R41 - Risk of serious damage to eyes R15 - Contact with water liberates extremely flammable gases R43 - May cause sensitization by skin contact R37/38 - Irritating to respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S22 - Do not breathe dust. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | UN 1403 4.3/PG 3 |
| WGK Germany | 2 |
| RTECS | GS6000000 |
| FLUKA BRAND F CODES | 9-21 |
| TSCA | Yes |
| HS Code | 31029010 |
| Hazard Class | 4.3 |
| Packing Group | III |
CALCIUM CYANAMIDE - Upstream Downstream Industry
| Raw Materials | Nitrogen Calcium carbide Calcium fluoride |
| Downstream Products | Thiourea Hexazinoe carbendazim |
CALCIUM CYANAMIDE - Nature
Open Data Verified Data
The Pure product is a colorless hexagonal crystal. Industrial products are dark gray powder or granules due to impurities such as carbon (graphite). There is a smell of calcium carbide or ammonia. The relative density is 2. 29, and the apparent density is 1.0~1.2g/m3. Melting point 1300 °c. Sublimation began at> 1150 °c. Do not dissolve in water, hygroscopic, water decomposition of ammonia, should not be long-term. Toxic to human body.
Last Update：2024-01-02 23:10:35
CALCIUM CYANAMIDE - Preparation Method
Open Data Verified Data
nitriding method: the calcium carbide is crushed and evenly mixed into fluorite and return to the furnace lime, and then the powder is ground into calcium carbide powder by ball mill, then enters the nitriding furnace, and reacts with nitrogen at 1000 ℃, after 42~48h, lime nitrogen was generated, and the frit was taken out and crushed by tube mill to obtain calcium cyanamide finished product.
Last Update：2022-01-01 11:01:10
CALCIUM CYANAMIDE - Use
Open Data Verified Data
A kind of alkaline fertilizer, is also one of the main raw materials of high-education low-toxic doxine pesticide, can be used as herbicides, fungicides, insecticides (to prevent the spread of schistosomiasis, prevention of root rot, rust, white mold, can kill snails, Leech, etc.). It can also be used as a defoliant for cotton and as a soil improvement agent. It is the basic raw material of organic synthesis industry and plastic industry, and can be used to produce dicyandiamide, melamine and cyanide melt.
Last Update：2022-01-01 11:01:09
CALCIUM CYANAMIDE - Safety
Open Data Verified Data
- the use of plastic woven bags or paper bags lined with polyethylene plastic bags, each weight 25kg. The package was marked with "drug. Belonging to inorganic drugs. Risk code: GB 4.3 class 43507. UNN0.1403; IMDG CODE page 4336, Class 4.3. Should be stored in a cool, well-ventilated, dry warehouse. Pay attention to moisture-proof, do not stack against the wall. Handling should be light and light, to prevent packaging damage. Wear work clothes, masks and gloves when handling. Rain-proof and waterproof equipment shall be provided during transportation. When there is a fire, the fire can be suppressed by sand and dry powder fire, but not by water.
- toxicity and protection: there are systemic toxicity, especially on the vascular motor center, respiratory center and blood, the occurrence of plant neurasthenia syndrome, at the same time there is a dysfunction of the endocrine organs and basal metabolism. Acute poisoning may be followed by organic neurological disorders, limb weakness and subsequent polyneuritis. Human lethal dose of 40~50g. Chronic poisoning often occurs like asthmatic bronchitis and bronchial wheezing, chronic gastritis and hepatitis, reduced blood pressure, myocardial malnutrition, sexual dysfunction, thyroid and adrenal dysfunction, dry skin, itching, dermatitis. Falling into the eye will cause purulent conjunctivitis, corneal ulcer and turbidity. Emergency treatment is to keep quiet. When the eye mucosa is damaged, rinse it carefully with water or normal saline, and then drop 1% Novocaine solution into the eye; In case of acute dermatitis, you can use a wet bandage made of lead water, and apply the liquid tightly; mild burns, with 1%~ 2% gentian violet, methylene blue or bright green alcohol solution applied to the site of injury, minor injuries can be used Lodine Tincture, nitrofurazone and sterilization tape. Staff should wear work clothes made of dense cloth, gloves, protective glasses and masks. Apply a non-irritating fatty ointment to the skin of the hands. Strict compliance with personal hygiene measures.
Last Update：2022-01-01 11:01:11
CALCIUM CYANAMIDE - Reference Information
| LogP | -0.72 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | has systemic toxic effects, especially on the vascular motor center, respiratory center and blood, autonomic neurasthenia syndrome occurs, and endocrine organs And the dysfunction of basal metabolism. After acute poisoning, there may be organic neurological diseases, limb weakness and subsequent polyneuritis. The lethal dose is about 40~50g. Chronic poisoning often occurs asthmatic bronchitis and bronchial wheezing, chronic gastritis and hepatitis, decreased blood pressure, myocardial malnutrition, sexual dysfunction, thyroid and adrenal dysfunction, dry skin, itching, and dermatitis. Into the eye can cause suppurative conjunctivitis, corneal ulcers and turbidity. Emergency treatment is to keep quiet. When ocular mucosa is damaged, rinse carefully with water or normal saline, and then drop 1% nofocaine solution into human eyes. In case of acute dermatitis, a wet bandage made of lead water can be given and tightly applied. In case of mild burns, 1% ~ 2% gentian violet, methylene blue or bright green alcohol solution is applied to the injured part. For minor injuries, iodine tincture, furacilin and sterilization tape can be used. Staff should wear work clothes made of dense cloth, gloves, protective glasses and masks. Apply a non-irritating fat ointment to the skin of your hands first. Strict compliance with personal hygiene measures. |
| Use | Used as carburizing agent, pig iron desulfurizer, used to make sodium cyanide, cyanamide, dicyandiamide, melamine, etc., used as defoliant or herbicide Calcium cyanamide is also known as lime nitrogen, calcium carbonitride or calcium cyanamide. It is mainly used in the production of carbendazim, benzoate and intermediate cyanamide in pesticides. When used as fertilizer, because calcium cyanamide has strong alkalinity, it is suitable for acidic soil and is generally used as base fertilizer. When exposed to water, cyanamide is initially formed, which is toxic to plants, but it is quickly converted into ammonia. This toxic effect causes plant leaves to fall off, so it can be used as herbicides, fungicides, insecticides and cotton defoliants. Calcium cyanamide can also be used as a raw material for the production of plastics, explosives, etc., and can be used for steel nitriding, gold and silver ore treatment, removal of nitrogen oxide in exhaust gas, removal of formaldehyde in wastewater, and corrosion inhibitor for brine, etc. when used as fertilizer, because calcium cyanamide has strong alkalinity, it is suitable for acidic soil and is generally used as base fertilizer. Cyanamide is initially formed when exposed to water, which is toxic to plants, but it is quickly converted into ammonia. This toxic effect causes plant leaves to fall off, so it can be used as herbicides, fungicides, pesticides and cotton defoliants. In industry, it is used for nitriding of steel. Gold and silver ore treatment, removal of nitrogen oxide from waste gas, removal of formaldehyde from waste water and corrosion inhibitor for brine. In addition, calcium cyanamide is used as raw material to produce plastics, pesticides, explosives, etc. It can be used to make cyanide compounds, fertilizers, pesticides, etc. An alkaline fertilizer is also one of the main raw materials for high-efficiency and low-toxicity carbendazim pesticides. It can be used as herbicides, fungicides, and pesticides to prevent the spread of schistosomiasis, prevent root rot, rust, white mold, and kill Oncomelania snails, leeches, etc.). It can also be used as cotton defoliant and improve soil. It is the basic raw material of organic synthesis industry and plastic industry, and can be used to produce dicyandiamide, melamine and cyanide melt. |
| production method | nitriding method will crush calcium carbide and evenly mix it into fluorite and lime, grind it into calcium carbide powder through a ball mill, then enter a nitride furnace, react with nitrogen at a high temperature of 1000 ℃, generate lime nitrogen after 42~48h, take out the frit and finely crush it through a tube mill. The finished calcium cyanamide is made. Its CaC2 + N2 → CaCN2 + C the calcium carbide is crushed, infiltrated into 1-3% fluorite or calcium chloride, mixed evenly, heated to about 1100 ℃ in a rotary kiln, and the product is produced after nitrogen reaction. Industrial production of calcium cyanamide is obtained by treating calcium carbide powder with nitrogen at high temperature. Reaction equation: CaC2 + N2 → CaCN2 pulverizes calcium carbide, ball milled, mixed with 1% ~ 3% fluorite or calcium chloride, mixed evenly, heated to about 1100 ℃ in a rotary kiln, and reacted with nitrogen to obtain the product. Pure calcium cyanamide can be obtained by reacting ammonia, carbon monoxide and calcium carbonate. |
| category | articles burning in contact with water |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 158 mg/kg; Oral-mouse LD50: 334 mg/kg |
| explosive hazard characteristics | flammable acetylene gas can be exploded in case of acid and water |
| flammability hazard characteristics | toxic ammonia and acetylene gas are flammable when exposed to water, humid air and acid; thermal decomposition discharges toxic nitrogen oxides and cyanide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; moisture-proof; separate from oxidant, halogen, and strong acid |
| fire extinguishing agent | dry powder, dry sand |
| occupational standard | TWA 0.5g/m3; STEL 1.5 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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View History
CALCIUM CYANAMIDE
VALERIC ACID (D9)
2-[2-羟基-3-[异丙基氨基]丙氧基]苯丙酸乙酯
NETUPITANT IST-2
邻苯二甲酸二异壬酯(支链异构体类的混合物)
BLASTICIDIN(灭瘟素S盐酸盐)
DIMETHYLDIOCTADECYLAMMONIUM CHLORIDE
CHLORAMPHENICAL PALMITATE
(2, 4-dp)-piperidin-4-yl-methanone oximehcl
TOSLAB 861154
VALERIC ACID (D9)
2-[2-羟基-3-[异丙基氨基]丙氧基]苯丙酸乙酯
NETUPITANT IST-2
邻苯二甲酸二异壬酯(支链异构体类的混合物)
BLASTICIDIN(灭瘟素S盐酸盐)
DIMETHYLDIOCTADECYLAMMONIUM CHLORIDE
CHLORAMPHENICAL PALMITATE
(2, 4-dp)-piperidin-4-yl-methanone oximehcl
TOSLAB 861154
Raw Materials for CALCIUM CYANAMIDE
Downstream Products for CALCIUM CYANAMIDE