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Thiourea

Educational Use Only - Order On Request
Thiourea
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Product Code: RXSOL-19-1419-025

Categories

Powder Chemical-98

Product Description

Thiourea are organic compounds having a carbon atom bonded to two amine groups. The key difference between urea and thiourea is that urea does not contain sulfur atoms, whereas thiourea contains sulfur atoms.

Product Short Description

CH4N2S

Product Application

Thiourea is used as an auxiliary agent in diazo paper, light-sensitive photocopy paper and almost all other types of copy paper. It is also used to tone silver-gelatin photographic prints.

Product Dose

Thiourea, also called thiocarbamide, an organic compound that resembles urea (q.v.) but contains sulfur instead of oxygen; i.e., the molecular formula is CS(NH2)2, while that of urea is CO(NH2)2.

In thiourea, a double bond is present between the carbon and sulfur atom. So, it is an unsaturated compound. Hence, thiourea is an unsaturated compound.

Product Note

Thiourea is used as an auxiliary agent in diazo paper, light-sensitive photocopy paper and almost all other types of copy paper. It is also used to tone silver-gelatin photographic prints.

 

Dissolve 500 mg 6-chloro-A in 5ml ethanol, add 1.5 equivalents of thiourea and reflux for 1 hour. After the reaction cools down i remove the filtrate and concentrate the flow-though.

Industrial area

Thiourea is an additive used in the electrorefining and electroplating of copper, and it can also be used to clean copper objects: 
Electrorefining and electroplating
Thiourea is an important additive in the electrorefining and electroplating of copper. It reacts with copper or copper ions to form CuS, which can lead to the formation of smooth and bright copper deposits.

Cleaning copper objects
Thiourea can be used to clean copper objects by dissolving it in a solution with citric acid. The object is placed in the solution and left until it is clean, which can take several minutes to several hours. After cleaning, the object should be washed thoroughly to remove any traces of acid. 

Cleaning Procedure of copper objects:
Wear rubber or nitrile gloves to avoid leaving marks on the copper.
Fully immerse the object in the solution.
Use a soft bristle brush to speed up the cleaning process.
If the object is porous or has been treated for a long time, immerse it in a bath of sodium carbonate to neutralize any acid residue

After Cleaning COAT on surface : 
Apply a protective coating (lacquer or wax) to maintain a clean shiny surface on copper-based objects. Remember that the patinas (except bronze disease) which form on bronze and copper objects are attractive and stable and do not need any form of protective coating unless they are in a harsh environment. In the latter case, consult a conservator for advice.
 
Microcrystalline-polyethylene wax mixtures can be used as protective coatings. A recipe that has been found to be useful is comprised of:
 
microcrystalline wax 100 g
polyethylene wax 25 g
white spirits 250 ml
Prepare the paste as follows:
 
melt the wax components together and stir well to ensure thorough mixing; and
quickly pour the mixture into the white spirits and stir constantly while it cools to produce a smooth white paste.
The sheen of the resultant wax film can be altered by varying either the grades or the proportions of the waxes used. When it is dry the wax can be either polished for a shiny finish or left untouched for a matt finish. If subsequent bronze disease treatment is found to be necessary this wax can be removed with white spirit.
 
An alternative coating is an acrylic lacquer containing a corrosion inhibitor. This has proved most satisfactory in preventing re-tarnishing of bronze and copper. A commercially available lacquer (‘Incralac’) can be obtained either in a spray can or as a brush-on paint. If necessary this product can be removed with acetone.
 pour the mixture into the white spirits and stir constantly while it cools to produce a smooth white paste.
The sheen of the resultant wax film can be altered by varying either the grades or the proportions of the waxes used. When it is dry the wax can be either polished for a shiny finish or left untouched for a matt finish. If subsequent bronze disease treatment is found to be necessary this wax can be removed with white spirit.
 
An alternative coating is an acrylic lacquer containing a corrosion inhibitor. This has proved most satisfactory in preventing re-tarnishing of bronze and copper. A commercially available lacquer (‘Incralac’) can be obtained either in a spray can or as a brush-on paint. If necessary this product can be removed with acetone.

Remarks

THIOUREA AR  is used in vulcanization accelerators. It is used as an auxiliary agent. It is used in silver – gelatin photographic prints. It is used in diazo paper, light – sensitive photocopy paper.

The percentages of nitrogen and sulfur in all the samples synthesized from thiourea were roughly 5–20 wt. % and 3–8 wt. % even after washing with hot water, respectively.

Other Equivalent Brand

CH4N2S

Product Useful Area

Thiourea PRACT 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.

Free Delivery / Supply Locations

Oman, Bahrain, Abu Dhabi, Ajman, Al Ain, Dubai, Ras Al-Khaimah, Fujairah, Sharjah, Umm Al Quwain, Ruwais, Khalifa Port, Jebel Ali, DP WORLD, and all UAE ports...