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HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA


CAS No.  23605-74-5
Molecular Formula: C10H28N2O12P4    

Molecular Weight: 492.3


Properties:


HMDTMPA is a white crystal powder at room temperature, slightly soluble in water, with solubility less than 5%.
HMDTMPA can inhibit most scale formation such as calcium carbonate, calcium sulfate, barium sulfate and ferric oxide. As water treatment chemicals, HMDTMPA is used as scale inhibitors for calcium sulfate and barium sulfate, for calcium sulfate in particular. It has high scale inhibition rate and can last for long effective time. HMDTMPA can be used for crush treatment in oilfield and for water treatment in boiler.


Specification:

 

 

Items

index

 

Appearance

White crystal powder

 

Active component (as HDTPMA-) %

97.0 min

 

chloride (Cl-)%

0.5 max

 

PH value (1% water solution)

2.0 max

 

Fe3+,mg/L

35 max

 

Package and Storage:

 

25kg inner liner polyethylene (PE) bag, or conformed to export environmental requirement, or confirmed by clients. Storage for twelve month in room shady and dry place.

 

 

Polyamino Polyether Methylene Phosphonae (PAPEMP)

Molecular weight:   about 600

 

Properties:


PAPEMP is a new kind of water treatment agent. PAPEMP has high chelation and dispersion effects, high value of calcium tolerance, and good scale inhibition effects. PAPEMP can be used as scale and corrosion inhibitor in circulating cool water system and oilfield refill water system in situations of high hardness, high alkali and high pH value. PAPEMP has excellent scale inhibition ability to calcium carbonate, calcium sulfate and calcium phosphate. PAPEMP can efficiently inhibit the formation of silica scale, stabilize metal ions such as Zn, Mn and Fe.
PAPEMP can be used as scale inhibitor for reverse osmosis system and multistep flash vaporization system in which high salt concentration, high turbidity and high temperature are usually encountered (such as high temperature and high turbidity in coal vaporization system), accessory agent for woven & dyeing (for example, yellow turnback inhibition agent), as alternatives of EDTA, DTPA and NTA .


Specification:

 

 
Items

index

 

Appearance

Amber transparent liquid

 

Solid content %

45.0 min

 

Active component (PAPEMP) %

40.0 min

 

Phosphorous acid (as PO43-)%

1.0 max

 

Density (20℃) g/cm3

1.20±0.05

 

pH (1%solution)

2.0±0.5

 

Usage:


The dosage of 5-100mg/L is preferred. Different from other Water Treatment Chemicals, the more quantity is, the better the effect. PAPEMP can be built with polycarboxylic acids.

 

Package and Storage:

 

Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.