Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium

No.: WTP-031

GENERAL INFORMATION

• HS CODE	29212190
• CAS NO	1429-50-1
• GRADE	Technical Grade
• FORMULA	C₆H₁₂O₁₂N₂P₄Na₈
• MOLECULAR WEIGHT	612.13

PROPERTIES

• Appearance	Clear yellow to umber transparent viscous liquid
• Solubility	Soluble in water
• pH(1% water solution)	9.5～10.5
• Stability	Stable under normal temperature
• Density(20℃,g/cm3)	≥1.25

SPECIFICATIONS

• Active component (as EDTMPS)%	≥28.0
• Organic phosphonic (as PO₄^3-)%	≥10.0
• Phosphorous acid (as PO₃^3-)%	≤5.0
• Phosphoric acid (as PO₄^3-)%	≤1.0
• Chloride (as Cl^-) %	≤3.0

APPLICATION

• This product can be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing and dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used in water treatment of low pressure boiler. It can also be built with BTA, PAAS and zinc salt.

PACKING

• 25kg in plastic barrel, or confirmed by clients.

STORAGE AND TRANSPORTATION

• Store for ten months in cool and dry place.

• It is acidic, avoid contacting with eyes and skin, once contacted, flush with water