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Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
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Polycarboxylic Antiscalant and Dispersant
Biocide and Algicide
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Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
Corrosion Inhibitors & Oxygen Scavenger
Surfactant & Others

Hydroxyethylamino-Di(Methylene Phosphonic Acid) (HEMPA)

CAS No. 5995-42-6 EINECS No. 227-833-4
Molecular Formula C4H13NO7P2 Molecular Weight 249
Structural Formula

HEMPA Structural Formula

Product Features

HEMPA is an organophosphoric acid, which exhibits excellent chelation, scale inhibition and corrosion inhibition. HEMPA is also compatible with methanol and water solution. When built together with other water treatment chemicals, HEMPA shows good synergistic effects. HEMPA is also an excellent dispersant for calcium-based deposits. HEMPA significantly improves the rinsing properties of washing and cleaning formulations. In high saline systems of oilfield applications, HEMPA can show its excellent calcium tolerance.

Technical Specification

Parameter Standard
Appearance Colorless to light yellow transparent liquid
Active content, % 60.0 min
pH (1% water solution) 2.0 max
Chloride (as Cl-), % 5.0 max
Fe, mg/L 20.0 max
Density (20℃), g/cm3 1.30 min

Applications & Usage

HEMPA can be used as industrial cleaner and sequestration of metal ions.

HEMPA is usually used together with other organophosphoric acid, polycarboxylic acid and salt in different areas.

Package & Storage

HEMPA Liquid
25L Drum 200L Drum 1000L IBC ISO Tank
25kg Bag 200L Drum packaging 1000L IBC packaging ISO Tank Packaging
Storage for 10 months in shady room and dry place.

Hazard & Safety Precaution

Hazard Information Safety Precaution

Corrosive, Class 8, UN 3265 Corrosive, Class 8, UN 3265

Wear protective gloves Wear protective goggles Wear protective clothing

Once contacted with eye and skin, flush with plenty of clean water.

Alternative Name / Synonyms

  1. Ethanolamine bis(methylenephosphonic acid);
  2. EABMP Acid

Related Products

  1. Ethanolamine bis(methylenephosphonic acid)