Dicyandiamide

CAS  461-58-5

EINECS 207-312-8

MF:C2H4N4

MW:84.08

Assay  99.5%

Dicyandiamide propertiesMelting point of 208-211 ° C (lit.)

Density of 1.40Storage conditions 2 to 8 ° C

Solubility H2O: 0.1 g/mL, clear

Water solubility 32 g/L (20 º C)Merck 14309 2BRN 605637Stability Stable. Incompatible with strong acids, strong oxidizing agents, strong bases.CAS DataBase 461-58-5 (CAS DataBase Reference)NIST chemical information Dicyandiamide (461-58-5)

USES dicyandiamide and synthesis methodChemical properties LengXing white crystalline powder. Slightly soluble in water and ethanol, soluble in ether and benzene.Use 3 get together cyanogen amine is the raw material, also is the synthesis of medicine, pesticide and dye intermediatesUse in organic synthesis and synthetic resin, also used as sulfide accelerator and curing agentUse 3 get together cyanogen amine is the production of raw materials. Is medical and dye intermediates. In the medicine used in producing nitric acid pill, sulfa drugs, etc. And it can also be used to making thiourea, pill, nitric acid cellulose stabilizer, rubber sulfide accelerator, steel surface stiffening agent, printing and dyeing color fixing leather, artificial leather packing and binder etc.USES dicyandiamide main use: (1) as a first-line salt, 3 get together cyanogen amine class two of raw material. Use dicyandiamide and acid reaction, can manufacture all kinds of guanidinium. Dicyandiamide as reaction of phenyl and get benzene generation 3 get together cyanogen amine is the coating, laminated, forming the intermediate of powder. (2) used as a dye fixing agent, dicyandiamide and formaldehyde reaction made dicyandiamide resin can be used as the dye fixing agent. (3) dicyandiamide fertilizer, dicyandiamide compound fertilizer denitrifying bacteria can control the activity, make the nitrogen fertilizer in the soil of conversion speed get adjustment, reduce nitrogen losses, and improve the efficiency in the use of fertilizers. (4) as a fine chemical intermediates. In the medicine used in producing nitric acid pill, sulfa drugs, etc.; Also used to making thiourea, nitric acid cellulose stabilizer, rubber sulfide accelerator, steel surface stiffening agent, artificial leather packing, adhesive and so on. The dicyandiamide and formic acid reaction can get pharmaceutical intermediates 5-nitrogen miscellaneous cytosine.Use of epoxy powder coating of curing agent.The production methods of lime nitrogen (cyanogen amine calcium) and water on hydrolysis, took the suspension of calcium hydrogen ammonia hydrolyzed cyanogen filter to remove calcium hydroxide, filtrate ventilation with carbon dioxide take off calcium, get cyanogen ammonia liquid. Then, make cyanogen ammonia in weak alkali conditions polymerization. Generate dicyandiamide maximum speed of temperature and pH when relevant: 50 °C pH 9.7 when; When 80 °C for 9.1 pH; When 100 °C for 8.8 pH. Control in these conditions after polymerization, then the cooling crystallization, separation, dry, asking dicyandiamide finished product. Industrial goods dicyandiamide content 99%, every tons product consumption lime nitrogen (n more than 21%) 4239 kg.Method of production lime nitrogen law will nitrogen and water on hydrolysis of lime, the suspension of cyanide reaction of calcium hydrogen ammonia hydrolyzed, the reduced pressure filter to remove calcium hydroxide phosphate-contained residue, will limestone decomposition production of carbon dioxide to take off our filtrate calcium response, generating cyanogen ammonia liquid, in alkaline conditions polymerization, then the filter, cooling crystallization, separation, dry, the dicyandiamide. the2 CaCN2 + 2 H2O-Ca (HCN2) 2 + Ca (OH) 2Ca (HCN2) 2 + CO2 and H2O + 2 NH2CN + CaCO32 NH2CN-(NH2CN) 2

Safety informationDangerous goods mark Xn, TDangerous category code 20/21/22-and-36/38-25Safe means 22-24/25-45-36-3WGK Germany 1

RTECS ME9950000 number

Customs code 29262000Poison material Data 461-58-5 (Hazardous Substances Data)

Dicyandiamide DCDA CAS NO 461-58-5