Product Details

PBTC Chemical(2-Phosphonobutane -1,2,4-Tricarboxylic Acid)

PBTC (2-Phosphonobutane-1,2,4-Tricarboxylic Acid) — PBTC is a high-performance scale and corrosion inhibitor for circulating cooling water, especially under high-temperature, high-pH and high-hardness conditions, with excellent chemical and chlorine stability.

Key facts: CAS 37971-36-1 · molecular formula C7H11O9P · typical dosage 1–15 ppm in cooling water · supplied as a liquid in 25 kg & 200 kg drums and 1000 kg IBC totes. Manufactured factory-direct by VCYCLETECH — an ISO 9001/14001/45001-certified water-treatment chemical manufacturer in Shanghai, China (since 2013), with a COA on every batch, free samples and OEM/ODM available.

PBTC Chemical(2-Phosphonobutane -1,2,4-Tricarboxylic Acid) is a colorless transparent liquid. It has good solubility in water and ethanol. The product is slightly acidic. It mainly produces polyester resin intermediate products, adhesives, sealants, and coatings. If you are looking for a quality PBTC Chemical(2-Phosphonobutane -1,2,4-Tricarboxylic Acid), then you can't go wrong with vcycletech. We are a professional supplier based in China, offering the best products at the best prices. Contact us today to learn more!

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Product Description

CAS No. 37971-36-1

Molecular Formula: C7H11O9P

Molecular weight: 270.13

Structural Formula:

PBTC Chemical Properties :

PBTC is a low phosphoric acid content compound with the structural features of phosphoric and carboxylic acids. Its antiscale properties under high temperatures are far better than those in organophosphines, making it an ideal choice for scale and corrosion control. Additionally, it improves zinc salt solubility and exhibits good chlorine oxidation tolerance and composite synergy.

PBTC Chemical Specification:

Usage:

PBTC is a highly effective scale and corrosion inhibitor, making it a popular choice in circulating cool water and oilfield refill water systems. It can also be used as a chelating agent and metal detergent in lavation fields. Its excellent stabilizing properties for zinc salt make it ideal for high temperature, hardness, alkali, and concentration environments.

When used alone, the recommended dose is 5-15mg/L. However, it is usually combined with zinc salt, copolymer, organophosphine, imidazole, or other Water Treatment Chemicals to achieve better results.

Specification:

Items	Index
Appearance	Clear, colorless to pale yellow aqueous solution
Active acid %	50.0 min
Phosphorous acid(as PO33-)%	0.5 max
Phosphoric acid(as PO43-)%	0.2 max
Density (20℃) g/cm3	1.27 min
pH(1% water solution)	1.5~2.0
Fe, mg/L	10.0 max
Chloride mg/L	10.0 max

Package and Storage:

200L plastic drum,IBC(1000L),customers’ requirement. Storage for one year in a shady room and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin; once contacted, flush with water.

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PBTC Applications

PBTC is a high-performance scale and corrosion inhibitor with outstanding chemical and chlorine stability, ideal for severe cooling-water conditions.

Circulating cooling water at high temperature, high pH and high hardness
Systems running at high cycles of concentration
Programs using chlorine-based biocides

Dosage & Feed Guidance

Application	Typical dosage
Circulating cooling water	1–15 ppm (mg/L)

Its strong threshold effect and chlorine stability often allow lower dosing than other phosphonates in demanding systems, with good calcium tolerance. VCYCLETECH provides a tailored dosing program on request — email sales@vcycletech.com.

PBTC — Packaging, MOQ & Lead Time

Packaging	25 kg drums, 200 kg drums and 1000 kg IBC totes; bulk on request
Minimum order (MOQ)	1 metric ton
Lead time	In-stock items ship in about 5–7 days; a full 20′ container is typically ready in about 15 days
OEM	Yes — private-label packaging and custom concentration (your logo on the drums)
ODM	Yes — custom formulation development under NDA, MOQ 1 metric ton
Payment & shipping	T/T or L/C; FOB / CIF worldwide

Why Choose VCYCLETECH

Factory-direct manufacturer. PBTC is produced in our own China facility — stable quality and competitive, factory-direct pricing.
ISO 9001, ISO 14001 & ISO 45001 certified production. See our quality & certifications.
COA with every batch and an SDS on request; free samples available.
OEM / ODM & private label — custom concentration, packaging and formulation.
Technical support & worldwide shipping with a recommended dosing program for your system.

Request a quote, sample & COA →

PBTC — Frequently Asked Questions (FAQ)

What is PBTC (2-Phosphonobutane-1,2,4-Tricarboxylic Acid) used for?

PBTC is a high-performance scale and corrosion inhibitor for circulating cooling water, especially under high-temperature, high-pH and high-hardness conditions. Its high chemical and chlorine stability allows lower dosing and good calcium tolerance.

What is the recommended dosage of PBTC?

PBTC is typically used at 1–15 ppm in cooling water. Its strong threshold effect and chlorine stability often allow lower dosing than other phosphonates in demanding systems.

Is VCYCLETECH a manufacturer or trading company of PBTC?

VCYCLETECH is a China-based manufacturer of PBTC (2-Phosphonobutane-1,2,4-Tricarboxylic Acid). We supply PBTC factory-direct with stable quality, competitive prices and full technical support, and we also offer OEM/ODM and private-label packaging.

What packaging and MOQ are available for PBTC?

PBTC is supplied in 25 kg drums, 200 kg drums and 1000 kg IBC totes (bulk on request). The typical MOQ is 1,000 kg (one IBC tote); trial/sample orders and custom OEM/private-label packaging are available.

Can I get a free sample and COA of PBTC?

Yes. VCYCLETECH provides free PBTC samples and a Certificate of Analysis (COA) with every batch, plus an SDS on request. Email sales@vcycletech.com to request a sample, COA or quotation.

Product Details

PBTC Chemical(2-Phosphonobutane -1,2,4-Tricarboxylic Acid)