Calciumcyanamid
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Calciumcyanamid Eigenschaften
- Schmelzpunkt:
- >300 °C(lit.)
- Dichte
- 2.29
- Dampfdruck
- 0.51Pa at 20℃
- L?slichkeit
- reacts with H2O
- Aggregatzustand
- Powder
- Wichte
- 2.29
- Farbe
- Gray to dark gray
- Wasserl?slichkeit
- insoluble H2O, but undergoes hydrolysis releasing acetylene and ammonia [HAW93] [MER06]
- Sensitive
- Moisture Sensitive
- Merck
- 14,1662
- BRN
- 4124391
- InChIKey
- QFSRQFUIHVTIDL-UHFFFAOYSA-N
- LogP
- -0.72 at 20℃
- CAS Datenbank
- 156-62-7(CAS DataBase Reference)
- EPA chemische Informationen
- Calcium cyanamide (156-62-7)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | Xn,F | ||
---|---|---|---|
R-S?tze: | 22-37-41-15-43-37/38 | ||
S-S?tze: | 26-39-43-36/37/39-22-45-28 | ||
RIDADR | UN 1403 4.3/PG 3 | ||
OEB | C | ||
OEL | TWA: 0.5 mg/m3 | ||
WGK Germany | 2 | ||
RTECS-Nr. | GS6000000 | ||
F | 9-21 | ||
TSCA | Yes | ||
HazardClass | 4.3 | ||
PackingGroup | III | ||
HS Code | 31029010 | ||
Giftige Stoffe Daten | 156-62-7(Hazardous Substances Data) |
Bildanzeige (GHS) | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Alarmwort | Achtung | |||||||||||||||||||||||||||||||||||||||||||||||||
Gefahrenhinweise |
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Sicherheit |
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Calciumcyanamid Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE KRISTALLECHEMISCHE GEFAHREN
Zersetzung unter Einfluss von Wasser unter Bildung von Cyanamid (siehe ICSC 0424), Ammoniak, Calciumhydroxid und Acetylen, Feuer- und Explosionsgefahr. Greift viele Metalle unter Bildung brennbarer/explosionsf?higer Gase an (z.B. Wasserstoff, ICSC-Nr. 0001).ARBEITSPLATZGRENZWERTE
TLV: 0.5 mg/m?(ACGIH 2005). MAK: 1 mg/m? (Einatembare Fraktion); Spitzenbegrenzung: überschreitungsfaktor II(2); Hautresorption (H); Schwangerschaft: Gruppe C (DFG 2008).AUFNAHMEWEGE
Aufnahme in den K?rper in gef?hrlichen Mengen durch Inhalation und durch Verschlucken.INHALATIONSGEFAHREN
Eine gesundheitssch?dliche Partikelkonzentration in der Luft kann schnell erreicht werden durch Dispergieren.WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:Die Substanz reizt stark die Augen und die Atemwege.
LECKAGE
Pers?nliche Schutzausrüstung: Atemschutzger?t, P2-Filter für sch?dliche Partikel. Verschüttetes Material mit nicht brennbarem inertem trockenen Absorptionsmittel abdecken. Verschüttetes Material in abgedeckten Kunststoffbeh?ltern sammeln. NICHT in die Kanalisation spülen.R-S?tze Betriebsanweisung:
R22:Gesundheitssch?dlich beim Verschlucken.R37:Reizt die Atmungsorgane.
R41:Gefahr ernster Augensch?den.
R15:Reagiert mit Wasser unter Bildung hochentzündlicher Gase.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.S39:Schutzbrille/Gesichtsschutz tragen.
S43:Zum L?schen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erh?ht, anfügen: "Kein Wasser verwenden").
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S22:Staub nicht einatmen.
Aussehen Eigenschaften
CaCN2, Düngemittel, Herbizid, FungizidCarbaminsäurenitril Calciumsalz, Calciumcarbodiimid, Calciumcarbamonitril.
Gefahren für Mensch und Umwelt
LD50 oral Ratte: 1400 mg/kg Reizt die Atmungsorgane Sensibilisierung durch Hautkontakt möglich. Gesundheitsschädlich beim Verschlucken. Reizt die Atmungsorgane. Gefahr ernster Augenschäden.Wassergefährdend (WGK 2).
Schutzma?nahmen und Verhaltensregeln
Bei der Arbeit geeignete Schutzkleidung, Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.Staubschutz (Partikelfilter) verwenden.
Schutzbrille mit Seitenschutz und oberer Augenraumabdeckung verwenden.
Schutzhanschuhe aus Neopren oder Nitril als kurzzeitiger Spritz- und Staubschutz.
Verhalten im Gefahrfall
Substanz trocken aufnehmen und als Sondermüll entsorgen.Geeignete Löschmittel: Wasser, Kohlendioxid, Schaum, Sand.
Erste Hilfe
Nach Hautkontakt: Betroffene Stellen mit Polyethylenglykol (PEG 400) reinigen und mit viel Wasser nachspülen.Nach Augenkontakt: Bei geöffnetem Lidspalt mit viel Wasser ca. 15 Minuten sorgfältig spülen. Arzt aufsuchen.
Nach Einatmen: Verunfallten an die frische Luft bringen, ggf. Atemspende durchführen.
Nach Verschlucken: Wäßrige Aufschlämmung von Medizinalkohle zu trinken geben. Anschließend Erbrechen auslösen.
Nach Kleidungskontakt: Benetzte Kleidung sofort ausziehen.
Ersthelfer: siehe gesonderten Anschlag
Sachgerechte Entsorgung
Substanz als Sondermüll entsorgen (UN 1403, Kl. 4.3, Ziff. 19c) ADR). Hubland Herr Riepl, 8884711; Klinikum Herr Uhl, 2015557.Chemische Eigenschaften
Calcium cyanamide is a blackish-gray, shiny crystalline material or powder.Physikalische Eigenschaften
Pure product is a colorless, hexagonal crystal or white powder. Commercial grade material may be grayish-black powder or lump (the color is due to presence of calcium carbide and other impurities); density 2.29 g/cm3; melts around 1,340°C; sublimes around 1,150 to 1,200°C on rapid heating; reacts with water.Verwenden
Calcium Cyanamide is used as a fertilizer, herbicide, insecticide, a steel-making additive and an ore processing material. It can also be used to make thiourea, guanidine and ferrocyanides. manufacture of calcium cyanide, melamine, dicyandiamide.Vorbereitung Methode
Calcium cyanamide was first produced commercially around 1900 as a fertilizer. The process of making calcium cyanamide involves three raw materials—coke, coal, and limestone— plus nitrogen. The limestone (calcium carbonate) is burned with coal to produce calcium oxide. The calcium oxide is then allowed to react with amorphous carbon in the furnace at 2000°C with the formation of calcium carbide (CaC2). Finely powdered calcium carbide is heated to 1000°C in an electric furnace into which pure nitrogen is passed. It is then removed and uncombined calcium carbide removed by leaching.Definition
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.
synthetische
Calcium cyanamide is prepared from calcium carbide. The carbide powder is heated at about 1,000°C in an electric furnace into which nitrogen is passed for several hours. The product is cooled to ambient temperatures and any unreacted carbide is leached out cautiously with water.CaC2 + N2 → CaCN2 + C (ΔHƒ°= –69.0 kcal/mol at 25°C)
Allgemeine Beschreibung
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.Air & Water Reaktionen
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].Reaktivit?t anzeigen
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.Hazard
Fire risk with moisture or combined with calcium carbide. Skin, eye, and upper respiratory tract irritant. Questionable carcinogen.Health Hazard
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.Brandgefahr
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.Sicherheitsprofil
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 CYANIDEm?gliche Exposition
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.Carcinogenicity
Calcium cyanamide was weakly mutagenic in Salmonella typhimurium strain TA1535 and nonmutagenic in strain TA100.Versand/Shipping
UN1403 Calcium cyanamide with .1% calcium carbide, Hazard Class: 4.3; Labels: 4.3-Dangerous when wet materialInkompatibilit?ten
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 decompositionCalciumcyanamid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Midinyanglin
Methylcyancarbamat
Cyanguanidin
S,S-Dimethylcyanimidodithio-carbonat
Black cyanide
guanidine
Aminoguanidiniumhydrogencarbonat
Carbendazim
1,1-Dimethylguanidinium-sulfat-(2:1)
4-AMINO-2-METHOXYPYRIMIDINE-5-CARBONITRILE
Aminoguanidinium Carbonate
3-Cyclohexyl-6-dimethylamino-1-methyl-1,2,3,4-tetrahydro-1,3,5-triazin-2,4-dion
Pirimiphos-methyl (ISO)
Aminoiminomethansulfinsure
Di-n-butylamin
Guanidiniumnitrat
Cyanamid
Aminoguanidiniumsulfat
Calcium nitrate tetrahydrate
Thioharnstoff
Calciumcyanamid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 110)Lieferanten
Firmenname | Telefon | Land | Produktkatalog | Edge Rate | |
---|---|---|---|---|---|
Hebei Weibang Biotechnology Co., Ltd | +8615531157085 |
abby@weibangbio.com | China | 8810 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 |
sales@hbmojin.com | China | 12835 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21634 | 55 |
SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 |
sales@sdzschem.com | China | 2930 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22963 | 58 |
Standardpharm Co. Ltd. | 86-714-3992388 |
overseasales1@yongstandards.com | United States | 14332 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39894 | 58 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
factory@coreychem.com | China | 29811 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 |
sales@tnjchem.com | China | 34563 | 58 |
AFINE CHEMICALS LIMITED | +86-0571-85134551 |
sales@afinechem.com | China | 15352 | 58 |
156-62-7(Calciumcyanamid)Verwandte Suche:
Calciumchlorid
Calciumcarbonat
Calciumhexaborid
Calciumdipropionat
Calciumacetylid
Tricalciumbis(orthophosphat)
Calciumoxid
Calciumnitrit
Cyanamid
Chlordioxid
Harnstoff
Kupferdicyanid
Natriumhydrogencarbonat
(2H3)Methylammoniumchlorid
Cyanguanidin
Bis(amidinoharnstoff)sulfat
Amidinouroniumchlorid
Dimethylammoniumchlorid
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