Main Products
- Polycarboxylic antiscale and dispersant
- Organophosphoric Antiscale and Corrosion Inhibitors, Chelants
- Amino Trimethylene Phosphonic Acid (ATMP)
- 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
- Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)
- Ethylene Diamine Tetra (Methylene Phosphonic Acid) EDTMPA (Solid)
- Diethylene Triamine Penta (Methylene Phosphonic Acid) (DTPMPA)
- 2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)
- Polyhydric alcohol phosphate ester (PAPE)
- 2-Hydroxyphosphonocarboxylic Acid (HPAA)
- HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA
- Polyamino Polyether Methylene Phosphonae (PAPEMP)
- Bis(HexaMethylene Triamine Penta (Methylene Phosphonic Acid)) BHMTPMPA
- Organophosphoric Salts
- Bactericide and Algicide
- Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
- Corrosion Inhibitor
- Reverse Osmosis Chemicals
2-Phosphonobutane -1,2,4-Tricarboxylic Acid
(PBTCA)
CAS No. 37971-36-1
Molecular Formula: C7H11O9P Molecular weight: 270.13
Structural Formula:

Properties:
2-Phosphonobutane -1,2,4-Tricarboxylic Acid has low content of phosphoric, has structural features of both phosphoric acid and carboxylic acid group, which enable its excellent scale and corrosion inhibition properties. Its antiscale property under high temperature is far better than that of organophosphines. 2-Phosphonobutane -1,2,4-Tricarboxylic Acid can improve zinc salt solubility, has good chlorine oxidation tolerance and good composite synergy.
Specification:
| items | index |
| Appearance | Colorless or light yellow transparent liquid |
| Active acid % | 49.0-51.0 |
| Phosphorous acid(as PO33-)% | 0.8 max |
| Phosphorous acid(as PO43-)% | 0.5 max |
| Density (20℃) g/cm3 | 1.27 min |
| pH(1% solution) | 1.5~2.0 |
Usage:
2-Phosphonobutane -1,2,4-Tricarboxylic Acid is a high efficient agent as scale and corrosion inhibitor. It is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. 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.
2-Phosphonobutane -1,2,4-Tricarboxylic Acid is usually used together with zinc salt, copolymer, organophosphine, imidazole and other Water Treatment Chemicals. When used alone, the dosage of 5-15mg/L is preferred.
Package and Storage:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for one year in room shady and dry place.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Synonyms:
PBTCA;PBTC;PHOSPHONOBUTANE TRICARBOXYLIC ACID;2-Phosphonobutane -1,2,4-Tricarboxylic Acid;2-Phosphonobutane-1,2,4-tricarboxylic acid PBTC;

