HexaMethyleneDiamineTetra (MethylenePhosphonic Acid)

HDTMPA

CAS No.: 23605-74-5                                        EINECS No.: 245-781-0

Molecular Formula: C₁₀H₂₈N₂O₁₂P₄                  Molecular Weight: 492.3

RIDADR: UN 3261 8/PG II

Structural Formula:

Properties: 

HDTMPA is white crystal powder at room temperature, slightly soluble in water, with solubility less than 5%. HDTMPA can inhibit most scale formation such as calcium carbonate, calcium sulfate, barium sulfate and ferric oxide. But in water treatment industry, HDTMPA is mainly used as scale inhibitor for calcium sulfate and barium sulfate.

Among all the organic phosphonic acids, HDTMPA has the best scale inhibition performance for calcium sulfate, and not only the scale inhibition rate is high, the effective time is long, so especially suitable for extrusion treatment in oilfield. HDTMPA can also be used for water treatment in boilers.

Specification:

Items	Index
Appearance	White crystal powder
Active component (as HDTPMA-) %	97.0 min
chloride (Cl-)%	0.5 max
pH (1% water solution)	2.0 max
Fe，mg/L	35 max

Package and Storage:

Normally 25kg inner liner PE bag, 1000kg woven bag, or customers’ requirement. 

Storage for twelve month in shady room and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin, once contacted, flush with water.

Synonyms:

HMDTMPA; HDTMP; HDTMPA; HDTMP(A);

HexaMethyleneDiamineTetra(MethylenePhosphonic Acid);

HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA;

Hexamethylenediaminetetrakis-(methylenephosphonic acid);

Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents