Thiosemicarbacid

Bezeichnung:Thiosemicarbacid

CAS-Nr79-19-6

Englisch Name:thiosemicarbazide

CBNumberCB0132714

SummenformelCH5N3S

Molgewicht91.14

MOL-Datei79-19-6.mol

Synonyma

Thiosemicarbazid

Thiosemicarbacid

Thiosemicarbacid physikalisch-chemischer Eigenschaften

Schmelzpunkt	180-183 °C (dec.)(lit.)
Siedepunkt	208.6±23.0 °C(Predicted)
Dichte	1.221 (estimate)
Dampfdruck	1.15Pa at 25℃
Brechungsindex	1.5800 (estimate)
storage temp.	Store at +15°C to +25°C.
Löslichkeit	DMSO : 125 mg/mL (1371.52 mM; Need ultrasonic)
pka	pK1:1.5(+1) (25°C,μ=0.1)
Aggregatzustand	Powder
Farbe	White to light yellow
PH	5-7 (50g/l, H2O, 20℃)
Wasserlöslichkeit	soluble
Merck	14,9361
BRN	506320
Stabilität	Stable. Incompatible with strong oxidizing agents.
InChIKey	BRWIZMBXBAOCCF-UHFFFAOYSA-N
LogP	-1.67
CAS Datenbank	79-19-6(CAS DataBase Reference)
NIST chemische Informationen	Hydrazinecarbothioamide(79-19-6)
EPA chemische Informationen	Thiosemicarbazide (79-19-6)

Sicherheit

Kennzeichnung gefährlicher	T+
R-Sätze:	28-52/53-26/27/28
S-Sätze:	22-26-36/37-45-61-28A-36/37/39
RIDADR	UN 2811 6.1/PG 2
WGK Germany	3
RTECS-Nr.	VT4200000
F	8-9-23
TSCA	Yes
HazardClass	6.1
PackingGroup	II
HS Code	29309070
HS Code	29335995
Giftige Stoffe Daten	79-19-6(Hazardous Substances Data)
Toxizität	LD50 orally in adult Norway rats: 13 mg/kg, Dieke, Proc. Soc. Exp. Biol. Med. 70, 688 (1949)

Gefahreninformationscode (GHS)

thiosemicarbazide Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R28:Sehr giftig beim Verschlucken.
R52/53:Schädlich für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R26/27/28:Sehr giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
white crystalline solid
Chemische Eigenschaften
Thiosemicarbazide is an odorless, white crystalline powder.
Verwenden
Used in TLC to stain alpha-keto acidsThiosemicarbazide is used as a reagent for ketones as well as chemical intermediate. It is involved in the detection of metals. It is also used in photography. Further, it is effective for controlling bacterial leaf blight in rice. In addition to this, it is used to prepare 1,3,4-thiadiazoles.
Verwenden
As a reagent for detection of metals.
Definition
ChEBI: Hydrazinecarbothioamide is a member of the class of thioureas that is thiourea in which a hydrogen of one of the amino groups is replaced by an amino group. It is a member of hydrazines, a thiocarboxamide and a member of thioureas.
Allgemeine Beschreibung
N-Aminothiourea is a white crystalline powder and is odorless. N-Aminothiourea is used as a reagent for ketones and certain metals, for photography and as a rodenticide. N-Aminothiourea is also effective for control of bacterial leaf blight of rice. Not a registered pesticide in the U.S. N-Aminothiourea is a chemical intermediate for herbicides and a reagent for detection of metals.
Reaktivität anzeigen
Isocyanates and thioisocyanates are incompatible with many classes of compounds, reacting exothermically to release toxic gases. Reactions with amines, aldehydes, alcohols, alkali metals, ketones, mercaptans, strong oxidizers, hydrides, phenols, and peroxides can cause vigorous releases of heat. Acids and bases initiate polymerization reactions in these materials. Some isocyanates react with water to form amines and liberate carbon dioxide. Base-catalysed reactions of isocyanates with alcohols should be carried out in inert solvents. Such reactions in the absence of solvents often occur with explosive violence, [Wischmeyer(1969)].
Health Hazard
N-Aminothiourea is highly toxic by ingestion. May induce goiter and cause delayed toxic effects in blood and skin. May be mutagenic in human cells.
Brandgefahr
When heated to decomposition, very toxic fumes of sulfur oxides and nitrogen oxides are emitted.
Flammability and Explosibility
Non flammable
Sicherheitsprofil
Poison by ingestion, intraperitoneal, and intravenous routes. Questionable carcinogen with experimental tumorigenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx.
mögliche Exposition
Thiosemicarbazide is a dithiocarbamide compound is used as an intermedialte for pharmaceuticals and herbicides; as a reagent for ketones and certain metals; in certain photography and dye operations; as a rodenticide. It is also effective for control of bacterial leaf blight of rice.
Versand/Shipping
UN2771 Thiosemicarbazide, pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
läuterung methode
Crystallise thiosemicarbazide from H2O (solubility is 20.3% w/w at 80o). The hydrochloride has m 190-191o(dec, 184o also reported). It forms salts with heavy metals. [Beilstein 3 H 195, 3 I 79, 3 II 134, 3 III 315, 3 IV 374.]
Inkompatibilitäten
Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.) and strong reducing agents; contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. May react with nitrates.

thiosemicarbazide Upstream-Materialien And Downstream Produkte

Thiosemicarbacid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

79-19-6, thiosemicarbazide Verwandte Suche:

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