2,5-DITHIOBIUREA

PRODUCT IDENTIFICATION
CAS NO. 142-46-1

2,5-DITHIOBIUREA
EINECS NO. 205-537-6
FORMULA C2H6N4S2
MOL WT. 150.22

H.S. CODE

  

TOXICITY

  
SYNONYMS N,N'-Bisthiocarbamyl Hydrazine Bis(thiourea)
1,2-Hydrazine-o-dicarbothioamide 1,2-Hydrazine carbothioamide 1,2-Hydrazinedicarbothioamide 2,5-dithiourea Dithiobiurea Dithiocarbamoyl hydrazine Bisthiocarbamyl hydrazine
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE off-white crystalline powder

MELTING POINT

 212 - 216 C
BOILING POINT Decomposes
SPECIFIC GRAVITY  

SOLUBILITY IN WATER

 Negligible
pH  
VAPOR DENSITY  
AUTOIGNITION

 

REFRACTIVE INDEX

 

NFPA RATINGS Health: 2 Flammability: 0 Reactivity: 0
FLASH POINT

 

STABILITY Stable under ordinary conditions
GENERAL DESCRIPTION AND APPLICATIONS
Thiourea (also called Thiocarbamide or Sulfourea) is the diamide of thiocarbonic acid that resembles urea but contains sulfur instead of oxygen. 'Thio'   is a chemical prefix indicates the replacement of an oxygen in an acid radical by sulfur with a negative valence of 2 meaning 'Sulfur' derived from the Greek theion. In fact, thiourea occurs as the mixture of  two tautomers: S=C(NH2)2 ( Thiourea) +  HS=CNHNH2 (Isothiourea),  accordingly, provides three functional groups (mino, imino, and thiol). Thiourea is a lustrous white crystalline compound estimated melting point is  170-180 C soluble in water  and in polar organic solvents   insoluble in non-polar solvents. The exact  melting point and boiling point are  not available since rearrangement to ammonium thiocyanate (NH4SCN) occurs at about 135 C and decomposition occurs. It can be prepared by heating ammonium thiocyanate, or by the addition of hydrogen sulfide to  cyanamide. The latter  is the more common method. Thiourea is used directly in ore filtering,  metal refinery and  cleaning, isomerization catalyst (conversion of maleic to fumaric acid) and as an additive in  fertilizers (to inhibit the nitrification process), drilling auxiliaries,  light-sensitive photocopy paper  and explosives.    It is  used as a fixing agent in photography, as a liquefying agent in animal hide glue, as an insecticide, as a textile-treating agent, and as an intermediate to produce other compounds. Thiourea and its derivatives are versatile intermediates  for the synthesis  of modified thermosetting resins, thiourea dioxide, dyes, flame retardants,  vulcanization accelerators, plant protection agents,  pesticides, amino resins, peptizing agents, fungicides, hair preparations, dry cleaning chemicals, corrosion inhibitors and thiazole drugs (e.g., antiseptic, thyrotherapeutic, narcotic, and tuberculostatic agents). Dithiobiurea possesses a wide dipole moment and thus is involved in the forming wide metal chelated complexes as the radioactiv-compound which used in radiopharmaceutical imaging, inhibiting enzyme function, kidney function study and to treat toxic metal poisoning. It is used in co-crystals development used in the field of nonlinear optics to generate new coherent wavelengths.
SALES SPECIFICATION

APPEARANCE

 off-white crystalline powder
ASSAY

98.0% min

MELTING POINT 212 - 216 C
TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: T, Risk Phrases: 45-23/24/25-43, Safety Phrases: 53-28A-37-45