37971-36-1 Usage
Description
2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTC) is the latest generation of internationally popular phosphonic carboxylic acid, known for its excellent performance in the compounding of high-efficiency scale and corrosion inhibitors. It is particularly suitable for water quality conditions characterized by high temperature, high hardness, high alkalinity, high pH, and high concentration ratio, and demonstrates effective scale inhibition for calcium carbonate and calcium phosphate scales. PBTC is a colorless or light yellow transparent liquid with a relative density of 1.275 at 20°C and a freezing point of -15°C. It exhibits outstanding scale and corrosion inhibition properties, as well as resistance to acids, alkalis, and oxidants, maintaining its stability even at pH levels above 14.
Uses
Used in Water Treatment Industry:
2-Phosphonobutane-1,2,4-tricarboxylic acid is used as a scale and corrosion inhibitor for its effectiveness in preventing the formation of calcium carbonate and calcium phosphate scales, making it ideal for use in circulating cooling water systems and oilfield water injection systems.
Used in Chemical Compounding:
PBTC is utilized as a stabilizer for zinc salts, enhancing the performance of these compounds in various applications, particularly when compounded with copolymers.
Used in Washing Industry:
2-Phosphonobutane-1,2,4-tricarboxylic acid serves as a chelating agent and metal cleaning agent, thanks to its ability to bind and remove metal ions, making it a valuable component in the formulation of cleaning products.
Check Digit Verification of cas no
The CAS Registry Mumber 37971-36-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,9,7 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 37971-36:
(7*3)+(6*7)+(5*9)+(4*7)+(3*1)+(2*3)+(1*6)=151
151 % 10 = 1
So 37971-36-1 is a valid CAS Registry Number.
InChI:InChI=1/C7H11O9P/c1-2-3(17(14,15)16)7(4(8)9,5(10)11)6(12)13/h3H,2H2,1H3,(H,8,9)(H,10,11)(H,12,13)(H2,14,15,16)
37971-36-1Relevant articles and documents
Preparation method of low-phosphorous corrosion and scale inhibitor PBTCA (2-phosphonobutane-1,2,4-tricarboxylic acid)
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Paragraph 0006; 0007; 0021; 0022, (2016/11/14)
The invention discloses a preparation method of low-phosphorous corrosion and scale inhibitor PBTCA (2-phosphonobutane-1,2,4-tricarboxylic acid). Certain amounts of diethyl phosphite and diethyl maleate are added to a reaction kettle, a condensation reflux device and a stirrer are started, a certain amount of a catalyst A is slowly dropwise added under the stirring condition that the revolving speed of the stirrer is 200 r/min, and the mixture reacts for 1 h after the temperature is increased to 100 DEG C; then the temperature is decreased to 50 DEG C, a certain amount of ethyl acrylate is added, and the mixture reacts for 8 h in the stirred state; then a certain amount of a catalyst B is added to the reaction kettle, the mixture is heated to 80 DEG C for hydrolysis for 0.5 h, and a finally obtained product, namely, PBTCA, is a yellowish-brown viscous liquid. The preparation method of PBTCA has the advantages of simple process route, convenience in operation, low three-waste emission and the like, and can be widely applied to corrosion and scale inhibition of industrial recirculating cooling water systems.
