The citrated calcium salt is used in the treatment of alcoholism. CaCN2 - CALCIUM CYANAMIDE. This process requires meticulous temperature control since the melting point of calcium cyanamide is only about 120°C lower than the boiling point of sodium chloride. endstream endobj 24 0 obj <> endobj 25 0 obj <>/Border[0 0 0]/Rect[79 110 124 125]/Subtype/Link/Type/Annot>><>/Border[0 0 0]/Rect[139 110 160 125]/Subtype/Link/Type/Annot>><>/Border[0 0 0]/Rect[342.58 110.0 363.58 125.0]/Subtype/Link/Type/Annot>>]/Contents[28 0 R 29 0 R 31 0 R 32 0 R 33 0 R 34 0 R 35 0 R 36 0 R]/CropBox[0 0 612 792]/MediaBox[0 0 612 792]/Parent 21 0 R/Resources<>/Font<>/ProcSet[/PDF/Text]>>/Rotate 0/Type/Page>> endobj 26 0 obj <>stream 2012-05-09. Calcium cyanamide; Cyanamide calcium salt The carbide powder is heated at about 1000 °C in an electric furnace into which nitrogen is passed for several hours. It is a potent inhibitor of liver aldehyde dehydrogenases in vivo. In 1901, Ferdinand Eduard Polzeniusz patented a process that converts calcium carbide to calcium cyanamide in the presence of 10% calcium chloride at 700 °C. Deutsches Reichspatent DRP 88363, "Verfahren zur Darstellung von Cyanverbindungen aus Carbiden", Erfinder: A. Frank, N. Caro, erteilt am 31. CYANAMIDE is the amide of cyanic acid. Vannerberg, N.G. This means it mainly affects newly germinated weed seedlings and small weeds up to the Its main constituent, calcium cyanamide, has no residual properties after it has demonstrated its effectiveness as an agricultural chemical (insecticidal, fungicidal, and sterilization), decomposing into its components in the soil, ensuring that it can be used safely. It crystallizes in hexagonal crystal system with space group R3m and lattice constants a = 3.67 Å, c = 14.85 Å.[11][12]. Calcium Cyanamide CaNCN bulk & research qty manufacturer. A colorless to gray, odorless solid. Other reasons for its loss of popularity were its dirty-black color, dusty appearance and irritating properties, as well as its inhibition of an alcohol-degrading enzyme which causes temporary accumulation of acetaldehyde in the body leading to dizziness, nausea, and alcohol flush reaction when alcohol is consumed around the time of bodily exposure. h�b```"36#~�g`��0p\4X�I�5L��a�F���g��2h4p4�t0t��Pt2@M�`��|2�A���_��:qp�����q;�n��X 7ÂE@��[p#�6�@D� �Zm It is a colorless and intensely smelling gas. H.H. (5) Commercial grades of calcium cyanamide occur as grayish-black lumps of powder. Description. It soluble in cold water (hydrolysis on the anion). May cause illness from ingestion. Franck, W. Burg, Zeitschrift für Elektrochemie und angewandte physikalische Chemie, Angewandte Chemie, Band 29, Ausgabe 16, Seite R97, 25. �|�5��~��G���go�8�������;8��ݒ��)'�>���r ���ws;/�N���e%�k^)�Q����P�ޔ�dl*M[�5�+�������&�e�fB�= A�/�SB21�39�S3&4SJ1 }l�GB����F��5=��dE��V�[k��Xs krc�� ����C^�Op>>������h9ߪ�-!K��9S �˲ٟr+y���D��Ӄ��M�i�&��������}J�JKV@Z_�vkx'� �mO�K}�s��Tڶ����%cM���'8>4���tZ����u�}�W�\�[�j�SҶ�%�;m��4�$�����;��4BoIt�m�Н��F�?�����t���N)��gF��87�k;`&EZ7b��a��vS���1���G����#_. 23 0 obj <> endobj The average oral LD (50) for cyanamide in rats is 125 (85 to 180) mg/kg, and cyanamide has been observed to be very irritating and caustic to the skin (American Cyanamide Company Product Information Bulletin, as cited in ACGIH 1986/Ex. (2,5) Free samples program. May irritate the skin. h�bbd``b`Z$�A��@���` �T� �ւ�!K���X� 2���=�X����Ȱ�b``$���x�@� �4& [9] It was at the time the cheapest nitrogen fertilizer with additional efficacy against weeds and plant pests and had great advantages over conventional nitrogen fertilizers. The application rate should be approximately 350 kg calcium cyanamide per hectare, corresponding to a dose of 35 grams of calcium cyanamide per square meter. Characteristics. Cyanamide Accession Number DB02679 Description. Absorption of water during handling or storage of technical calcium cyanamide may cause explosion [Pieri, M. Chem. Articles of calcium cyanamide are included as well. 46, 8335 1952]. :|����q��8Y֧߮�vͰ������ˋ�ë�˕���z���eU�R�ۋ�����~/U���n�!_ޞ An obsolete post-emergence herbicide and defoliant with some fungicidal … According to the harmonised classification and labelling (CLP00) approved by the European Union, this substance is harmful if swallowed, causes serious eye damage and may cause respiratory irritation. Calcium cyanamide has many potential health effects. [14], Cyanamide calcium salt, Lime Nitrogen, UN 1403, Nitrolime, Except where otherwise noted, data are given for materials in their. The conversion is conducted in slurries, consequently most commercial calcium cyanamide is sold as an aqueous solution. F. Brezina, J. Mollin, R. Pastorek, Z. Sindelar. Calcium cyanamide is activated in the soil when it comes into contact with liquid water. 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