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Thioharnstoff Produkt Beschreibung

Thiourea Struktur
62-56-6
CAS-Nr.
62-56-6
Bezeichnung:
Thioharnstoff
Englisch Name:
Thiourea
Synonyma:
THU;250g;THIO;tsizp34;Thiurea;(NH2)2CS;Thiourea;Sulourea;thio-ure;thiouree
CBNumber:
CB9854008
Summenformel:
CH4N2S
Molgewicht:
76.12
MOL-Datei:
62-56-6.mol

Thioharnstoff Eigenschaften

Schmelzpunkt:
171 °C
Siedepunkt:
263.89°C (estimate)
Dichte
1.405
Brechungsindex
1.5300 (estimate)
storage temp. 
Store at RT.
Löslichkeit
water: soluble137g/L at 20°C
Aggregatzustand
Crystals
pka
-1.0(at 25℃)
Farbe
White to almost white
Wichte
1.406
PH
6-8 (50g/l, H2O, 20℃)
Wasserlöslichkeit
13.6 g/100 mL (20 ºC)
Merck 
14,9367
BRN 
605327
Stabilität:
Stable. Incompatible with strong acids, strong bases, strong oxidizing agents, metallic salts, proteins, hydrocarbons. May react violently with acrolein.
InChIKey
UMGDCJDMYOKAJW-UHFFFAOYSA-N
CAS Datenbank
62-56-6(CAS DataBase Reference)
NIST chemische Informationen
Thiourea(62-56-6)
EPA chemische Informationen
Thiourea(62-56-6)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xn,N,Xi
R-Sätze: 22-40-51/53-63-43-38
S-Sätze: 36/37-61
RIDADR  UN 2811 6.1/PG 3
WGK Germany  2
RTECS-Nr. YU2800000
Selbstentzündungstemperatur 440 °C Dust
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29309070
Giftige Stoffe Daten 62-56-6(Hazardous Substances Data)
Toxizität LD50 orally in wild Norway rats: 1830 mg/kg (Dieke)
Bildanzeige (GHS)
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitsschädlich bei Verschlucken. Akute Toxizität oral Kategorie 4 Warnung P264, P270, P301+P312, P330, P501
H351 Kann vermutlich Krebs verursachen. Karzinogenität Kategorie 2 Warnung P201, P202, P281, P308+P313, P405,P501
H361 Kann vermutlich die Fruchtbarkeit beeinträchtigen oder das Kind im Mutterleib schädigen. Reproduktionstoxizität Kategorie 2 Warnung P201, P202, P281, P308+P313, P405,P501
H411 Giftig für Wasserorganismen, mit langfristiger Wirkung. Langfristig (chronisch) gewässergefährdend Kategorie 2
Sicherheit
P201 Vor Gebrauch besondere Anweisungen einholen.
P273 Freisetzung in die Umwelt vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P391 Verschüttete Mengen aufnehmen.
P308+P313 BEI Exposition oder falls betroffen: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.
P405 Unter Verschluss aufbewahren.
P501 Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Thioharnstoff Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

WEISSE KRISTALLE ODER PULVER.

CHEMISCHE GEFAHREN

Zersetzung beim Erhitzen unter Bildung giftiger Rauchemit Stickstoffoxidenund Schwefeloxiden. Reagiert sehr heftig mitAcrolein, starken Säurenund starken Oxidationsmitteln.

ARBEITSPLATZGRENZWERTE

TLV nicht festgelegt (ACGIH 2005).
MAK: Sensibilisierung der Haut; Photosensibilisierung; Krebserzeugend Kategorie 3B; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.

INHALATIONSGEFAHREN

Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch schnell erreicht werden.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Wiederholter oder andauernder Kontakt kann zu Hautsensibilisierung führen. Möglich sind Auswirkungen auf die Schilddrüse. Möglicherweise krebserzeugend für den Menschen.

LECKAGE

Gefahrenbereich verlassen! Fachmann zu Rate ziehen! NICHT in die Kanalisation spülen. Verschüttetes Material in abgedeckten Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. NICHT in die Umwelt gelangen lassen. Chemikalienschutzanzug. Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel.

R-Sätze Betriebsanweisung:

R22:Gesundheitsschädlich beim Verschlucken.
R40:Verdacht auf krebserzeugende Wirkung.
R51/53:Giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R63:Kann das Kind im Mutterleib möglicherweise schädigen.

S-Sätze Betriebsanweisung:

S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.

Beschreibung

Thiourea appears as white crystal/powder, is combustible, and on contact with fire, gives off irritating or toxic fumes/gases. Thiourea is a reducing agent used primarily in the production of bleached recycled pulp. In addition, it is also effective in the bleaching of stone groundwood, pressurised groundwood. Thiourea undergoes decomposition on heating and produces toxic fumes of nitrogen oxides and sulphur oxides. It reacts violently with acrolein, strong acids, and strong oxidants. The main application of thiourea is in textile processing and also is commonly employed as a source of sulphide. Thiourea is a precursor to sulphide to produce metal sulphides, for example, mercury sulphide, upon reaction with the metal salt in aqueous solution. The industrial uses of thiourea include production of flame-retardant resins and vulcanisation accelerators. Thiourea is used as an auxiliary agent in diazo paper, light-sensitive photocopy paper, and almost all other types of copy paper. Thiourea is used in many industrial applications, including as a chemical intermediate or catalyst, in metal processing and plating, and in photoprocessing.

Chemische Eigenschaften

Thiourea consists of colorless, lustrous crystals or powder with a bitter taste.

Chemische Eigenschaften

white crystals or powder

Verwenden

The product is wildly used in pharmaceutical industry, agricultural, chemicals, metallurgical industry, petroleum and so on. It is also main material for producing thiourea dioxide(CH1N2O2S).

Verwenden

Chaotropic agent; strong denaturant. Increases solubility and recovery of proteins

Verwenden

Used in determination of bismuth.

Verwenden

In animal glue liquifiers and silver tarnish removers. Photographic fixing agent and to remove stains from negatives; manufacture of resins; vulcanization accelerator; a reagent for bismuth, selenite ions.

Verwenden

Thiourea is used in the manufacture of resins,as a vulcanization accelerator, and as aphotographic fixing agent and to removestains from negatives.

Verwenden

The most common uses for thiourea have been for the production of thiourea dioxide (30%), in leaching of gold and silver ores (25%), in diazo papers (15%), and as a catalyst in the synthesis of fumaric acid (10%) (IARC 2001). It has also been used in the production and modification of synthetic resins. Other uses of thiourea are as a photographic toning agent, in hair preparations, as a drycleaning agent, in the synthesis of pharmaceuticals and pesticides, in boiler-water treatment, and as a reagent for bismuth and selenite ions. It has also been used in textile and dyeing auxiliaries, in the production of industrial cleaning agents (e.g., for photographic tanks and metal surfaces in general), for engraving metal surfaces, as an isomerization catalyst in the conversion of maleic to fumaric acid, in copper-refining electrolysis, in electroplating, and as an antioxidant. Other uses have included as a vulcanization accelerator, an additive for slurry explosives,as a viscosity stabilizer for polymer solutions, and as a mobility buffer in petroleum extraction. It is also used as an ingredient of consumer silver polishes (HPD 2009), and has been used in the removal of mercury from wastewater by chlorine-alkali electrolysis (IARC 1974, 2001, WHO 2003).

Definition

A colorless crystalline organic compound (the sulfur analog of urea). It is converted to the inorganic compound ammonium thiocyanate on heating. It is used as a sensitizer in photography and in medicine.

Definition

thiourea: A white crystalline solid,(NH2)2CS; r.d. 1.4; m.p. 182°C. It isused as a fixer in photography.

Definition

ChEBI: The simplest member of the thiourea class, consisting of urea with the oxygen atom substituted by sulfur.

Allgemeine Beschreibung

White or off-white crystals or powder. Sinks and mixes with water.

Air & Water Reaktionen

Water soluble.

Reaktivität anzeigen

Thiocarbamide is a white crystalline material or powder, toxic, carcinogenic. When heated to decomposition Thiocarbamide emits very toxic fumes of oxides of sulfur and oxides of nitrogen. Violent exothermic polymerization reaction with acrylaldehyde (acrolein) [MCA SD-85, 1961], violent decomposition of the reaction product with hydrogen peroxide and nitric acid [Bjorklund G. H. et al., Trans. R. Soc. Can.,1950, 44, p. 28], spontaneous explosion upon grinding with potassium chlorate [Soothill, D., Safety Management, 1992, 8(6), p. 11].

Hazard

A questionable carcinogen. May not be used in food products (FDA); skin irritant (allergenic).

Health Hazard

Poisonous inhaled or swallowed. Irritating to skin; may cause allergic skin eruptions.

Health Hazard

The acute oral toxicity of thiourea in mostanimals is of low order. The oral LD50 values reported in the literature show variation.Symptoms of chronic effects in rats includebone marrow depression and goiters. Administration of 32.8 mol of thiourea in chickembryos on day 17 of incubation resultedin the accumulation of parabronchial liquidin those embryos (Wittman et al. 1987). Theinvestigators have attributed such changes tothe toxic effects of thiourea, rather to than aretardation of pulmonary development.
Dedon and coworkers (1986) observed thepossible protective action of thiourea againstplatinum toxicity. Thiourea and other sulfur-containing nucleophiles have the ability tochelate and remove platinum from biochemical sites of toxicity.
Oral administration of thiourea resultedin tumors in the liver and thyroid in rats.It is carcinogenic to animals and has shownsufficient evidence.

Brandgefahr

Noncombustible solid. There is no report of any explosion resulting from reactions of thiourea. Small amounts of thiourea in contact with acrolein may polymerize acrolein, which is a highly exothermic reaction.

Landwirtschaftliche Anwendung

Thiourea is a sulphur analogue of urea. It is a crystalline and colorless solid which is relatively insoluble in water. Thiourea, capable of breaking the dormancy of seeds, is used to stimulate seed germination. Seeds are soaked for less than 24 hours before planting.

Kontakt-Allergie

Thiourea is used as a cleaner agent for silver and cop- per, and as an antioxidant in diazo copy paper. It can induce (photo-) contact dermatitis.

mögliche Exposition

Thiourea is used as rubber antiozonant, toning agent; corrosion inhibitor; and in pharmaceutical manufacture; in the manufacture of photosensitive papers; flame-retardant textile sizes; boiler water treatment. It is also used in photography; pesticide manufacture; in textile chemicals.

Carcinogenicity

Thiourea is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.

Versand/Shipping

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

läuterung methode

Crystallise thiourea from absolute EtOH, MeOH, acetonitrile or water. Dry it under vacuum over H2SO4 at room temperature. [Beilstein 3 IV 342.]

Inkompatibilitäten

Dust may form explosive mixture with air. Reacts violently with acrolein, strong acids (nitric acid). 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.

Waste disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.

Thioharnstoff Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Thioharnstoff Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 390)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile; WhatsApp; Telegram)
+86-571-56059825 fandachem@gmail.com CHINA 2909 55
Shandong chuangyingchemical Co., Ltd.
13156170209
sale@chuangyingchem.com CHINA 4405 58
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21671 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sale@mainchem.com CHINA 32447 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1861 55
Hebei Chisure Biotechnology Co., Ltd.
+8613292890173
0311 66567340 luna@speedgainpharma.com CHINA 1016 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30001 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23980 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 sales@jushengtech.com CHINA 28236 58

62-56-6(Thioharnstoff)Verwandte Suche:


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