2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)
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2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)

Item No.: CAS NO.37971-36-1
Description Dangerous description
2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)
1.Product name: 2-Phosphonobutane -1,2,4-Tricarboxylic Acid ,Abbr: PBTCA,PBTC
                          2-Phosphonobutane -1,2,4-Tricarboxylic Acid;
                         2-Phosphonobutane-1,2,4-tricarboxylic acid PBTC;

2.Molecular weight: 270.13
   Molecular Formula: C7H11O9P        

3.CAS No.: 37971-36-1
Item Index
Appearance Colorless or light yellow transparent liquid
Active acid (as PBTCA)%≥ 49-51
Phosphorous acid(as PO33-)% ≤ 0.8
Phosphorous acid(as PO43-)% ≤ 0.5
Density (20oC) g/cm3≥ 1.270-1.310
pH(1% solution) 1.5 - 2.0
Fe  ppm 10.0 max.

 widely  used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, It is the excellent stabilizer for zinc salt. It can be used in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.
PBTCA is usually used together with zinc salt, copolymer, organophosphine, imidazole and other Water Treatmen hemicals. When used alone, the dosage of 5-15mg/L  is preferred.
6.Package and Usage:
Packed in200KG galvanized barrels or 1000KG IBC if possible and stored in a cool ,ventilated and dry place

UN NO.: 3265   Class: 8/PG 3
Dangerour Mark:   
Security IDS26 S45
Hazard IdentificationR34