Applications of Sodium 3-Chloro-2-Hydroxypropylsulfonate (CHPS-Na)

CHPS-Na (Sodium 3-Chloro-2-Hydroxypropylsulfonate)‌ is a vital organic chemical intermediate containing both hydroxyl and sulfonic acid groups. Its molecular structure combines hydrophilic sulfonic acid groups with highly reactive halogen atoms, enabling the introduction of hydrophilic hydroxy-sulfonic acid groups into synthetic materials. It is widely used in ‌surfactant preparation‌, ‌starch modification‌, and ‌oilfield drilling material production‌.

‌I. Surfactant Applications‌

‌1. Synthesis of Amphoteric Sulfobetaine Surfactants‌

• Prepared via ‌quaternization reaction‌ with long-chain alkyl tertiary amines (e.g., dodecyl dimethylamine) to yield amphoteric surfactants with ‌cationic-anionic dual functionality‌.

• Demonstrates ‌outstanding thermal resistance (>100°C)‌ and ‌salt tolerance (stable in high Ca²⁺/Mg²⁺ environments)‌, suitable for ‌high-temperature oilfield flooding agents‌ and ‌industrial detergents‌.

• ‌High activity‌ with ‌ultra-low critical micelle concentration (0.1-1 mmol/L)‌, effectively reducing oil-water interfacial tension and enhancing crude oil recovery.

‌2. Preparation of Sulfonated Hydroxypropyl Guar Gum‌

• Generated through ‌etherification reaction‌ with guar gum under weakly acidic conditions, serving as a ‌viscosifier for well-killing fluids‌. Key properties include:

• ‌Acid/alkali resistance (stable at pH 2-12)‌

• ‌Salt tolerance (withstands 10% NaCl solutions)‌

• ‌High transparency (>90% light transmittance)‌, ideal for ‌high-temperature, high-pressure drilling environments‌.

• Compared to carboxymethyl guar gum, the sulfonated product exhibits ‌higher purity (>95%)‌, resolving material discharge challenges in dry-process manufacturing.

‌II. Oilfield Applications‌

‌1. Development of Fluid Loss Reducers for Drilling Fluids‌

• Forms ‌2-hydroxy-3-sulfonatopropyl starch ether‌ via alkaline etherification with starch, acting as a drilling fluid additive:

• ‌Significantly reduces fluid loss (API filtration <10 mL/30 min)‌

• ‌Thermal resistance up to 150°C‌ and ‌salt tolerance in saturated brine systems‌, applicable to ‌deep-sea and shale gas extraction‌.

‌2. Fracturing Fluid Thickeners‌

• Modified guar derivatives deliver ‌superior viscoelasticity (viscosity >100 mPa·s)‌ and ‌30% enhanced proppant suspension capacity‌, minimizing formation damage.

‌III. Starch Modification‌

‌1. Functional Starch Derivatives‌

• ‌Food Industry‌: Serves as a ‌thickener and stabilizer‌, improving texture in dairy products and sauces, with ‌high-temperature sterilization resistance (121°C/30 min)‌.

• ‌Paper Industry‌: Functions as a ‌wet-strength agent‌, boosting dry/wet strength (‌wet strength retention >30%‌) and reducing lignin dissolution.

• ‌Environmental Materials‌: Modified starch acts as a ‌heavy metal adsorbent‌, achieving ‌Pb²⁺ adsorption capacity of 200 mg/g‌.

‌IV. Biomedical & Consumer Chemicals‌

‌1. Pharmaceutical Intermediate‌

• Used in synthesizing ‌psychotropic drugs (e.g., antidepressants)‌ via ‌nucleophilic substitution reactions‌ to enhance drug water solubility.

‌2. Cosmetic Additives‌

• Acts as an ‌emulsion stabilizer and humectant‌, improving ‌low-temperature stability (no precipitation at -20°C)‌ and reducing formulation irritation (‌pH 5.5-7.0‌).

‌V. Other Industrial Uses‌

‌1. Metallurgy‌

• Forms ‌metal complexes (Cu, Al, etc.)‌ as a surface treatment agent, enhancing ‌electroplating uniformity (roughness <0.1 μm)‌.

‌2. Textile Dyeing‌

• Serves as a ‌dye dispersant‌, reducing aggregation (‌particle size <100 nm‌) and improving ‌dyeing uniformity (color difference ΔE <0.5‌).

‌3. Water Treatment‌

• Modified starch derivatives act as ‌flocculants‌ for oily wastewater treatment (‌COD removal rate >85%‌), tolerant to high-salinity environments.

‌Future Development‌

CHPS-Na’s multifunctional groups enable potential in:

1. ‌Functional Polymers‌: Synthesis of ‌high-temperature-resistant ion-exchange resins (sulfonic acid group density >2 mmol/g)‌.

2. ‌New Energy‌: Modification of ‌lithium battery binders‌ to enhance ‌electrode cycling stability (>90% capacity retention after 500 cycles)‌.

‌Product Offerings‌

‌Wuhan Hugarise New Material Co.,Ltd‌ provides two CHPS-Na forms:

• ‌Anhydrous CHPS-Na‌: Higher purity, ideal for ‌precision chemical synthesis and high-end pharmaceutical intermediates‌.

• ‌Hemihydrate CHPS-Na‌: Contains fixed crystal water, eliminating drying steps to ‌simplify processes‌ (e.g., direct use in dye intermediate synthesis).

Through this dual-product strategy, we deliver ‌tailored, cost-effective, and eco-friendly solutions‌, driving ‌green industrialization‌ and ‌high-value industry upgrades‌.