2-Phosphonobutane-1,2,4-tricarboxylic acid Chemical Properties

Boiling point:

545.2±60.0 °C(Predicted)

Density 

1.25 (50% aq.)

vapor pressure 

0Pa at 25℃

solubility 

Completely miscible in water

form 

clear liquid

pka

1.14±0.10(Predicted)

color 

Colorless to Light yellow

Water Solubility 

909g/L at 20℃

InChIKey

SZHQPBJEOCHCKM-UHFFFAOYSA-N

LogP

-1.66 at 25℃

CAS DataBase Reference

37971-36-1(CAS DataBase Reference)

EPA Substance Registry System

2-Phosphono-1,2,4-butanetricarboxylic acid (37971-36-1)

Safety Information

Hazard Codes 

Xi;Xn,Xn,Xi

Risk Statements 

34

Safety Statements 

26-45

RIDADR 

UN 3265

HS Code 

2931.90.9051

HazardClass 

8

PackingGroup 

III

2-Phosphonobutane-1,2,4-tricarboxylic acid Usage And Synthesis

Description

2-Phosphonobutane-1,2,4-tricarboxylic acid(PBTC) is the latest generation of internationally popular phosphine carboxylic acid, and it is one of the most widely used and best-performing products in the compounding of high-efficiency scale and corrosion inhibitors. It is especially suitable for water quality conditions of high temperature, high hardness, high alkalinity, high pH, and high concentration ratio, and has good scale inhibition performance for calcium carbonate scale and calcium phosphate scale.

Uses

PBTC is the most widely used in the compounding of high-efficiency scale and corrosion inhibitors, is one of the products with the best performance, and is also an excellent stabilizer for zinc salts. It is widely used in the corrosion and scale inhibition of circulating cooling water system and oilfield water injection system, especially suitable for compounding with zinc salt and copolymer. It can be used as a chelating agent and metal cleaning agent in the washing industry.

Chemical Properties

2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC)is colorless or light yellow transparent liquid. Relative density (20°C) 1.275. Freezing point -15°C. Has excellent scale and corrosion inhibition properties. Acid resistance, alkali resistance, oxidant resistance. When pH>14, it still does not hydrolyze, and the thermal stability is good.

2-Phosphonobutane-1,2,4-tricarboxylic acid(37971-36-1)Related Product Information

• Sodium dichloroisocyanurate
• Sodium lignosulfonate
• ZINC PHOSPHATE, MONOBASIC
• Zinc sulfate heptahydrate
• Phosphorus pentoxide
• Zoledronic acid
• 2-Phosphonobutane-1,2,4-tricarboxylic acid sodium salt,2-Phosphonobutane -1,2,4-Tricarboxylic Acid, Sodium salt (PBTCANa4)
• 4-PHOSPHONOBUTYRIC ACID
• TERT-BUTYLPHOSPHONIC ACID
• 3-PHOSPHONOPROPIONIC ACID
• 2-PHOSPHONOBUTYRIC ACID
• 1,2,4-BUTANETRICARBOXYLIC ACID
• 2-Phosphonobutane-1,2,4-tricarboxylic acid
• 2-phosphonobutane-1,2,4-tricarboxylic acid, potassium salt
• 2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTCA)
• 2-phosphonobutane-1,2,4-tricarboxylic acid, zinc salt, compound with 2,2'-iminobis[ethanol]
• 2-phosphonobutane-1,2,4-tricarboxylic acid, compound with 2,2',2''-nitrilotri[ethanol]
• 2-phosphonobutane-1,2,4-tricarboxylic acid, ammonium salt
• Phosphonobutanetricarboxylic Acid