Closed-system site-limited production/use     

Notification Form Arabic Chinese English French Russian Spanish
Notification of Closed-System Site-Limited Intermediate

      

 PartySorted By Party In Ascending OrderChemicalTotal production and use [1]Date of notificationAny comments and link to actual notification [2]
BrazilDDT (Dicofol production)

Dicofol is produced by Nortox.  The capacity of the plant is 200 kg/day

Dicofol was not produced in 2003 and 2004.

Production of Dicofol in:

2003 = 0

2004 = 0

Dicofol is used in formulations as an acaricide on cotton, citrus and apple

9/13/2004

I - Production of dicofol:

1. DDT is produced using chloral, monochlorobenzene and oleum

2. DDT is dehydrochlorinated to dichlorodiphenyldichloroethane (DDE)

3. DDE is then chlorinated with chlorine producing the tetrachloro

4. Tetrachloro is purified by recristalization and then hydrolysed by an acidic hydrolytic medium to produce the acid Dicofol

5. Acid Dicofol extracted from the reaction mixture by decantation is neutralized and purified by vaccum distillation to get technical Dicofol

II - The manufacture wastes containing DDTr are destroyed by incineration.

III - The limit of DDTr required in dicofol technical is of 0.1%.  The results of analyses of DDTr are required by the Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) for each batch produced or imported of product technical.  Presentation of analyses results is a condition for import.

IndiaDichloro Diphenyl Trichloroethane (DDT)

Production:      150 ,000  kg
Use:             150,000  kg 

10/27/2006

Dicofol is produced in closed system in batches.  Through condensation of Chloral and  MonoChloroBenzene(MCB), DDT is produced which is further Dehydrochlorinated to DDE followed by tetrachloro through chlorination.  Tetrachloro further Hydrolysed by an acidic medium to produce Dicofol.  Non transformed manufacture wastes Ethylene Di Chloride(EDC)  is recovered from the final product for re-use through distillation.  Whole manufacturing process is done in closed system where after every steps transformed materials are transferred through closed lines and reaction process occurs in closed vessel.

People's Republic of ChinaDDT

3,000,000 - 4,000,000 kg

2/2/2005

About 80% of DDT is used as the intermediate in the production of dicofol.  There are 6 enterprises having the capability to produce dicofol among which 4 enterprises produce it at present.

At present, the amount of dicofol for the production of which DDT is used from pipeline to pipeline accounts for about 40%.

People's Republic of ChinaHCB

3,000,000 - 4,000,000 kg

2/2/2005

At present, the production of HCB and Na-PCP which used HCB as the intermediate occurs in the different workshops of the same enterprise.

About 98% of HCB is used as the intermediate in the production of Na-PCP.

      

[1] Actual figures or estimates.

[2] Include information regarding the nature of the closed-system site limited process including the amount of any non-transformed and unintentional trace contamination of persistent organic pollutant-starting material in the final product.