On December 27, 2010, the Indian Directorate General of safeguards initiated a safeguard investigation on imports of N1, 3-dimethyl butyl-N Phenyl paraphenylenediamine (also known as PX-13 or 6-PPD).
The products subject to investigation are classified under the following HS codes: 3812.10, 3812.20, 3812.30, 2934.20 and 2925.20.
According to the UN Comtrade Database, in 2009 the following countries exported goods classified under HS code subheadings 2925.20, 2934.20, 3812.10, 3812.20 and 3812.30 to India with a trade value over USD 1 million: China, South Korea, United States of America, Germany, Belgium, Singapore, Japan, Nepal, Italy, Malaysia, France, the United Kingdom, Switzerland and the United Arab Emirates.
On June 6, 2011, the Indian Directorate General of safeguards issued its final findings and recommended the imposition of a definitive safeguard duty for a period of two years, at a rate of 30% (minus anti-dumping duty payable) during the first year and 25% (minus anti-dumping duty payable) during the second year. The goods subject to the duty should be N1, 3-dimethyl butyl-N Phenylenediamine (PX-13 or 6-PPD also known as 6C, Pilflex 13, Sirantox 4020, Anti-oxidant 4020, Kumhonax 13, Vulconax 4020) falling under HS code subheadings 3810, 3812, as well as 2921, 2925, 2934 and 2942.
On August 30, 2011, the Indian Ministry of Finance issued the Customs Notification imposing this definitive safeguard duty (Notification No. 83/2011-Customs, 30.08.2011). This duty is enforced for a period of two years, according to the recommendations made by the Indian Directorate General of safeguards (see above).
This safeguard duty expired on August 30, 2013.
 
On 29 August 2013, the Indian Directorate General of safeguards initiated a expiry review of the above safeguard measure. The application was lodged on 31 July 2013 by NOCIL Ltd.
 
On 24 April 2014, the Indian Directorate General of safeguards terminated the above investigation without the extension of the safeguard measure imposed on the subject good.