We are an Arizona based company, and SBE/DBE certified by the City of Phoenix. Our specialty lies in supplying REMOTOX to the environmental remediation industry, focusing on four key market segments: Remediation, Municipal,​ Mining and Industrial.

​​Our company is fairly new but well-versed. We have gathered a team of experts with decades of combined experience in the manufacture and marketing of REMOTOX. â€‹â€‹Since our founding in 2010, it has been our privilege to serve a number of reputable national and international engineering and contracting firms, municipalities and metal processing companies.

​​Our product is manufactured in the Western United States, and meets ANSI standards for use in soil and groundwater treatment. Product is readily available in drums, totes and in tank truckloads at multiple shipping points. Transportation-wise, we work with well-respected trucking companies who are dedicated to providing safe, reliable and on-time service.

​​At Graus Chemicals, we offer a refreshing alternative to other suppliers in working to build long term relationships with customers, becoming a partner rather than just another supplier. We pledge to provide quality product at a competitive price, technical assistance and a warm, friendly service.

REMOTOX (calcium polysulfide) has gained in popularity as a cost ​​effective reagent for permanent treatment of heavy metals in soil, water and air.

REMOTOX precipitates the highly soluble metals as less soluble, and non-toxic compounds. ​​The extend and rate of the precipitation is a function of the pH of the system. Metal hydroxides change solubility with changes in pH. Metal sulfides remain insoluble within a relatively wide pH range. REMOTOX typically forms sulfides with most metals and hydroxides in the case of chromium.   

REMOTOX has become a preferred reagent for in-situ remediation of chromium. Hexavalent chromium (VI) in the form of chromate ​(CrO4(2-)) is reduced to the insoluble form of trivalent chromium (Cr III), which is less toxic and tends to fall out of solution and adhere to soil. ​​Details, bench tests and case studies regarding chromium treatment and remediation by calcium polysulfide can be found in the â€‹Chromium(VI) Handbook.

​Graus Chemicals takes pride in offering REMOTOX to the environmental remediation industry - a specialty product manufactured here in the United States with over 50 years of tradition and experience. ​​​​Whether you are looking for product in drums, totes or in bulk truckload quantities, our company can meet your needs.

REMOTOX® is a calcium polysulfide based liquid, also commonly referred to as lime-sulfur. It is a strong reductant and precipitant consisting of multiple sulfur compounds. Product is considered stable in storage and transportation, and it is not DOT regulated. The vapor space over the solution is mainly water vapor.

​REMOTOX is available in drums, totes and tank truckload quantities.​​ ​​​Materials of construction suitable for storing include stainless steel, fiberglass, polypropylene, polyethylene. Use REMOTOX in well ventilated area, and wash thoroughly after handling.

​​Keep containers tightly closed. Locate in cool, dry, well ventilated areas and out of direct sunlight at moderate temperature. ​​Avoid mixing REMOTOX with acids or acidic materials to reduce the potential for evolution of hydrogen sulfide gas.​​​