1758-73-2 CH4N2O2S Thiourea dioxide CAS NO.1758-73-2

thiourea dioxide basic information

product name:	thiourea dioxide
synonyms:	aminoimino-methanesulfinicaci;methanesulfinicacid,aminoimino-;fas primer pair;fastech;formamidinesulfinic acid;formamidinesulphinic acid;amidinosulfinic acid;aminoiminomethanesulfinic acid
cas:	1758-73-2
mf:	ch4n2o2s
mw:	108.12
einecs:	217-157-8
product categories:	inorganic & organic chemicals;inorganic chemicals;building blocks;chemical synthesis;organic building blocks;sulfonic/sulfinic acids;sulfur compounds
mol file:	1758-73-2.mol

thiourea dioxide chemical properties

mp	124-127 °c (dec.)(lit.)
density	1.68
storage temp.	2-8°c
water solubility	30 g/l (20 ºc)
sensitive	moisture sensitive
brn	506653
cas database reference	1758-73-2(cas database reference)
epa substance registry system	methanesulfinic acid, aminoimino-(1758-73-2)

safety information

hazard codes	xn,xi
risk statements	5-22-36/37/38
safety statements	26-24/25-36
ridadr	un 3341 4.2/pg 2
wgk germany	1
rtecs	pb0372500
hazardclass	4.2
packinggroup	ii
hs code	29309070

msds information

thiourea dioxide usage and synthesis

chemical properties	white crystalline powder
usage	convenient reagent for the reduction of ketones to secondary alcohols.
general description	a white or light-yellow odorless crystalline powder. mp:126°c. soluble in water (27 g / l at room temperature). decomposes exothermically at temperatures above 126°c with the emission of noxious gases (sulfur oxides, ammonia, carbon monoxide, nitrogen oxides and hydrogen sulfide) and carbon dioxide. extended exposure to temperatures above 50°c and moisture may cause visible decomposition. irritating to skin and mucous membranes. corrosive to eye tissue. used in leather processing, the paper industry, photographic industry, and in textile processing as a bleaching agent.
air & water reactions	soluble in water
reactivity profile	thiourea dioxide is a reducing agent and a derivative of sulfinic acid (a weak inorganic acid). decolorizes and bleaches materials by chemical reduction. stable under normal temperatures and pressures. may decompose on exposure to moist air or water. incompatible with strong oxidizing agents, strong bases. aqueous solutions are acidic and corrosive.
health hazard	fire will produce irritating, corrosive and/or toxic gases. inhalation of decomposition products may cause severe injury or death. contact with substance may cause severe burns to skin and eyes. runoff from fire control may cause pollution.
fire hazard	flammable/combustible material. may ignite on contact with moist air or moisture. may burn rapidly with flare-burning effect. some react vigorously or explosively on contact with water. some may decompose explosively when heated or involved in a fire. may re-ignite after fire is extinguished. runoff may create fire or explosion hazard. containers may explode when heated.

thiourea dioxide preparation products and raw materials

raw materials	hydrogen peroxide-->thiocarbamide-->ammonium bicarbonate-->calcium cyanamide-->ozone-->ammonium sulfide
preparation products	1,1-diphenyl-2-picrylhydrazyl

hennan sunlake enterprise corporation is located in henan province , the central plain of china , which enjoys favorable geogeaphical position and convenient transportion, the com[any was established in june. 1998 , until now having more than 18 years experience in manufacturing & exporting chemical raw material .

sunlake is a professional manufacturer engaged in producing and selling chemicals,including organic & inorganic chemicals , pigments & dyestuffs , water treatment chemicals , food & feed additives and others . these products have been being well exported to europe , southeast asia , the middle east , africa , south america and some other countries and areas.

we sincerely welcome foreign friends to visit our plant for cooperation. with the idea of "quality first,credit priority, excellent service", we are highly acknowledged by customers for good quality and competitive price. more importantly , the company has a strong r & d team, who are professional engineers and scholars with ph. d. .so we are confident to serve you better with our high - quality products and professional team.

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