Seatex welcomes ChemQuest to our family! Read more about the acquisition and our expanded operations.

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Our Locations: Rosenberg

Since 1967, Seatex has provided superior chemical forumlation and manufacturing services to businesses across a wide spectrum of industries. We’ve earned the trust of small businesses and Fortune 500 companies by proving we’re here to stay, and a big part of that dependability is demonstrated by our three locations.

This is the story of how we’re delivering exceptional service from our facilities in Rosenberg, Texas.

Seatex at Rosenberg​

Located at 445 Highway 36 N in the center of Fort Bend County, our Rosenberg plant stretches across 25 acres and sizes in at 320,000 square feet. We relocated here in 2007, completed a 70,000-square-foot blend plant expansion in 2011 and another in 2013. In 2016, we completed the purchase of our third location (239 Highway 36 N) and second in Rosenberg: 11 acres bordering our existing Rosenberg facility. In 2019, we finalized a multimillion-dollar, 40,000-square-foot agronomics plant expansion at the adjacent facility.

As many of our most distinguished chemists operate here, Rosenberg is our de facto technical center where formulation scale up and testing is done in our 2,000-square-foot, high-tech lab. Endothermic, exothermic, and other synthesis reactions work is performed here, as well. At the nextdoor location, we produce fertilizers for the agricultural industry.

Our Rosenberg locations are served by three on-site railcar spurs and have 120,000 gallons of bulk liquid storage.

Find Us


445 Highway 36 N

Rosenberg, TX 77471


Tel: 713.357.5300

Fax: 713.357.5301


Monday – Friday 8 a.m. – 5 p.m. (CST)

Serving You at Multiple Strategic Locations

We’re proud to offer our customers service at multiple locations in South Texas, each with convenient access to both rail and shipping lines. We save companies significant costs by performing blending, packaging, and labeling all in-house, rather than paying to have these services done by third parties across the country.

Seatex Location Advantages

Accredited to ISO 9001:2015 and facilities certified to EPA, GMP, NSF, Kosher, and UL standards.

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Core Services

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Seatex can handle your atmospheric reactions including Endothermic, Exothermic, Ammonization, Condensation, and many others.

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Custom Manufacturing

Seatex’s custom formulation and manufacturing processes utilize a diverse set of equipment, configured in such a way that we can customize a manufacturing process to fit your requirements.

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Liquid Blending

From Hazardous to Non-Haz, from simple to highly complex, Seatex has the capability to handle more than 100,000 gallons a day of custom blends, dispersions, suspensions, and packaging.

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Dry Blending

With rigid standards and unmatched flexibility, Seatex offers precise dry blends with package sizes from pouches to bulk rail.

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Turnkey Chemical Services

We bring our expertise to bear at every stage of your molecule’s life, simplifying your supply chain and giving you one point of contact. Everything we touch is backed by our dedication to our customers and our commitment to operating with integrity at all times.

R&D Initial Manufacturing Product Development & Scale up Reactions Turnkey Chemical Services Custom Manufacturing Liquid Blending Dry Blending Grinding & Milling CORE SERVICES Quality Control & Assurance Custom Packaging Customer Service Shipment/Logistics F l e x i b i l i t y A d v a n c e d R e a c t i o n s a n d P r o c e s s e s S e a m l e s s T h i r d - p a r t y M a n a g e m e n t o f Y o u r C h e m i c a l B l e n d i n g N e e d s

Industries We Serve

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Specialty Chemical

Seatex boasts the physical assets and mechanical capabilities to handle the toughest R&D and manufacturing challenges industrial companies face.

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Headquartered in the heart of energy country, we are seasoned producers of fluids and additives for drilling and completion tasks.

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We’ve handled virtually all household cleaning products, from hand care to floor care, laundry to restroom cleaners and everything in between.

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Our formulations are employed by farmers and food producers in their nutritional, crop protection, and specialty applications.

Rigorous QA and QC Protocols at Every Stage

Seatex’s Quality Assurance and Quality Control protocols ensure accuracy and reproducibility in your products, help you meet or exceed regulatory standards, and protect your brand. We are ISO 911:2015 certified with a full-time Quality Specialist on staff.

For us, QA and QC are the nuts and bolts of how we deliver excellent products, each and every time, just as we promised, with the data and reports to back it up.

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Trade Association Memberships

  • ISSA
  • Specialty & Agro
  • Inform Ex
  • ACIT
  • AADE


  • GMP
  • ISO 9001-2015
  • 50 Years
  • Problend