Phosphonomethyliminodiacetic acid

Phosphonomethyliminodiacetic acid (CAS 5994-61-6), commonly abbreviated as PMIDA, is a phosphonate-based chelating agent used across industrial water treatment, agriculture, and specialty chemical manufacturing.

Its primary commercial role is sequestering metal ions and inhibiting scale and corrosion in process systems. PMIDA is also a key intermediate in the synthesis of glyphosate herbicide, giving it significant relevance.

In agrochemical manufacturing, PMIDA serves as the direct precursor to glyphosate, making it a critical raw material for herbicide producers operating at scale. It is essential for high-volume production lines.

Water treatment formulators incorporate it into corrosion and scale inhibitor blends for cooling towers, boilers, and oilfield injection systems where metal ion control is critical for maintaining equipment integrity.

In textile and paper processing, it sequesters calcium and magnesium ions to prevent interference during bleaching and dyeing operations. This ensures consistent quality and color uniformity in the final products.

Oil and gas operators use PMIDA-based formulations to control mineral scale deposition in pipelines and production equipment. This application is vital for preventing flow restrictions and maintaining operational efficiency.

PMIDA is supplied as a white to off-white crystalline powder. Technical grade is the standard commercial form, with purity levels typically specified at 98% or higher for agrochemical intermediate use.

Bulk quantities are available for industrial procurement, with packaging options ranging from multi-layer bags to IBC containers depending on volume requirements and logistical needs for global distribution.