Category: Organophosphonic Antiscale and Corrosion Inhibitors, Chelant

HexaMethyleneDiamineTetra (MethylenePhosphonic Acid), HDTMP

Properties:

HDTMP is a white crystal powder at room temperature, slightly soluble in water (solubility less than 5%). Hexamethylene diamine tetra (methylene phosphonic Acid) is featured by its high inhibition degree and sustaining effect.

HDTMP is a multifunctional antiscalant with excellent effects on CaCO₃, CaSO₄, BaSO₄, and FeO, especially in inhibiting the CaSO₄ scale. In addition, it has a good scale inhibition rate and can last for a long effective time.

HDTMP can be used for crush treatment in the oilfield and water treatment in a boiler. However, its chelating ability is comparatively weak. Hexamethylene diamine tetra (methylene phosphonic acid) is suitable for conditions with desirable free metal ions.

CAS No.:

23605-74-5

Molecular Formula:

C₁₀H₂₈N₂O₁₂P₄

Molecular Weight:

492.3

Structure Formula:

HDTMP

Specifications:

Item	Index
Appearance	White crystal powder
Active component (as hmdtpma^–), %	97.0 Min.
Chloride (Cl^–), %	0.5 Max.
pH (1% water solution)	2.0 Max.
Fe, mg/L	35 Max.

Applications:

HDTMP is used for oilfield fracturing operations and boiler water treatment. It is also used for catalytic purposes.

Packing:

25 kg/bag.

Transport Info:

Corrosive. IMO class 8, UN 3265.

Synonyms:

HMDTMPA; HDTMPA; HDTMP(A).