about tsi

A Note from the Chair

Peter Zissos

The Sulphur Institute (TSI) is an international, non-profit organization established in 1960. TSI is the global advocate for sulphur, representing all stakeholders engaged in producing, consuming, trading, or adding logistical value to sulphur. We seek to provide a common voice for industry and to promote leading practices in the handling and transportation of all sulphur products, while protecting the environment and communities in which we operate.

The sulphur industry faces new and evolving challenges from both a regulatory and commercial perspective. Through its member driven Environment, Health, and Safety (EHS), Sulphuric Acid (H2SO4), and Transportation Regulations and Logistics (TRL) working groups, TSI plays a leading role in shaping the discussion and outcome around regulations related to H2S emission levels, rail tank car design standards, and classification of sulphur and sulphuric acid for transportation on both a regional and global basis.

Sulphur applications are a critical part of our way of life.  The majority of sulfur continues to be used for agricultural applications.  The “Fourth Major Crop Nutrient”, it is a vital building block for fertilizers and other products needed to increase crop yields and support plant growth.  Additionally, demand for sulfuric acid is growing with the world’s demand for precious metals (nickel, copper, lithium, cobalt).  Through its member driven Information and Advocacy (IA) working group, TSI works to present a positive image of sulphur and its value to society.

TSI's focus is centered on:

  • Increasing value to members through sharing and promoting safe and efficient handling, storage and logistics practices for sulphur.
  • Improving information dissemination to authorities worldwide as they contemplate and develop the regulatory frameworks associated with sulphur and its value-added applications.
  • Expanding knowledge for all with regard to sulphur and sulphur-related matters.

We welcome all with a vested interest in sulphur or its related industries to become members of TSI. A variety of issues and opportunities exist which are best addressed by the sulphur industry as a whole and TSI has a proven track record as the most effective way to speak with a unified voice.

It is a privilege to serve of the 2025-26 Chair of the Sulfur Institute!

J David Guy
Chair, The Sulphur Institute