Thiourea
(1)Chemical name:thiourea (thiocarbamide)
(2)Molecular formula & molecular weight:(NH2)2CS=76.12
(3)Specification:HG/T3266-2002.
Index Name | Index |
Excellence | First Grade | Qualifica_ tion |
Purity % ≥ | 99.0 | 98.5 | 98.0 |
Weight loss on dry % ≤ | 0.40 | 0.50 | 1.00 |
Ash % ≤ | 0.10 | 0.15 | 0.30 |
Insoluble matter in wate % ≤ | 0.02 | 0.05 | 0.10 |
Thiocyanate % ≤ | 0.02 | 0.05 | 0.10 |
Melting point ℃≤ | 171 | 170 | -- |
(4)Character:White,glazed crystal,bitter,soluble in water,decompositing when heated,being complex with a lot of metals and inorganic salts.
(5)Use:Used as thiazole medecine such as sulphathiazole,tetramizole,thiourea dioxide and a medium of medicine curing thyroid gland.Intextile industry,it's used as a bleaching agent,dyeing agent and antioxidant.In the proeess of making a blueprint paper,it is characterized by distinctness and fadelessness.In photo industry,it'used as a stabilizer of developing emulsion and fixing bath.In the proeess of extracting gold, it can replace the intense poison cyanide.Incopperplating and galanizing barium,it can devide equally the deposition of matals,improve the stability of electroplating solutiom and gain the lustre surface on the plating material. It's also used to clean accumulated filty in the high-pressure boiler and as a synergist for nitrogenous fertilizer.It can cure the mildew of oranges and tangerines and tangerines and restrain the bud of potato and yam.
(6)Packing:Packed in polypropylene bag,lined with polyethylene bag 25kg/bag net.
(7)Storage:Keep in a dry warchouse,Avoid raining when shipping.
Thiourea is a white crystalline solid, both naturally occurring and synthetic, that is soluble in water, ammonium thiocyanate solution and ethanol.
In the past, it was used as a photographic toning agent, a component of hair preparations and a dry cleaning agent.
Currently, it is only used in animal glue liquefiers and silver tarnish removers.
When heated to decomposition, thiourea emits toxic fumes of nitrogen oxides and sulfur oxides. Long-term exposure of humans to thiourea may cause bone marrow damage, resulting in reduced levels of red blood cells, white blood cells and/or platelets. It is reasonably anticipated to be a human carcinogen.