Foreword: Rapid Penetrant T (commonly known as "Fast T" or "Penetrant T") is an indispensable and efficient additive in many industries such as textile printing and dyeing, water treatment, leather treatment and pesticides. In response to hot questions in the industry about the composition, performance comparison, process flow and storage stability of "Fast T",National high-tech enterprise--Zhejiang Xinhaitian Biotechnology Co., Ltd.The following professional questions and answers are hereby compiled.

Q&A Session: Rapid Penetrant T (Fast T) Professional Question and Answer Analysis

1. What is the exact chemical name of rapid penetrating agent T? How did its commonly known names as "Fast T" and "Penetrant T" come from?

A： The exact chemical name for rapid penetrating agent T isSodium Dioctyl Sulfonate (DOSS), it is also often calleddocusate sodium。Its core active compound is the most popularsodium diisooctyl maleate sulfonate。because of itsFast and excellent penetration, has been commonly known as "Rapid Penetrant T" or "Fast T" in the industry.

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2. Compared with "Fast T" and the penetrant JFC, who has stronger penetration? What are the main differences in application? (Hotspot comparison)

A： Rapid Penetrant TtheInstant penetration and efficiency in reducing surface tensionusuallystronger thanNon-ionic penetrant JFC.

• Fast T (DOSS): asanionicType type, strong permeability, suitable for harsh process environments with high temperature and high alkalinity, such as efficient scouring and bleaching of cotton fabrics, which can quickly increase the wetting speed of the treatment solution.

• Penetrant JFC: belongs tononionicType type, focusing on good emulsification, dispersion and leveling properties, and is widely used in systems that require low penetration rates or require compatibility with multiple additives.

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3. What is the core production process (synthetic route) of rapid penetrating agent T? (Hot spot: Synthetic process)

A： The main synthesis route of "Fast T" isEsterification and sulfonationReaction:

1. Esterification reaction: Maleic anhydride reacts with isooctanol to form diisooctyl maleate.

2. Sulfonation reaction: The esterification product is subjected to addition reaction (sulfonation) with sodium bisulfite (or sodium metabisulfite) to finally obtainSodium diisooctyl sulfonate succinate (DOSS)。xinhaitianWith deep R & D accumulation in the field of fine chemicals (with multiple invention patents), we ensure thatRapid Penetrant TThe production process is stable and efficient.

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4. Why is the rapid penetrating agent T prone to "layering" or "turbid" under low temperature conditions? How to solve it? (Hot spot: low-temperature stratification)

A： As a high-concentration surfactant aqueous solution, rapid penetrating agent T is common for delamination, turbidity or precipitation at low temperatures (close to 0°C)physical phenomena, is a manifestation of the decrease in the solubility of the active substance or co-solvent at low temperatures, and is not a deterioration.

• Treatment method: In this situation, just place the productWarm environment (such as above 25°C) and slowly stir until uniform and transparentNormal use can be resumed without damage to its performance.

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5. How to judge whether the quality of the purchased rapid penetrating agent T is up to standard? What are the core indicators? (Hot spot: T standard for penetrant)

A： Quality judgment mainly relies on the following core indicators:

• Penetration speed (settling time): The most intuitive performance indicators are usually determined by professional penetration testing methods (such as immersion methods).

• Surface tension reduction value: Lower values indicate greater wetting and penetration capabilities.

• Appearance and solubility: High-quality products should be transparent or light yellow liquids, and should maintain good transparency and stability after dilution. asT/ZZB 3886-2024 "Dimethyldiallyl ammonium chloride" standardThe leading drafting unit ofxinhaitianThe control over product standards is extremely strict.

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6. What do the "T50" and "T80" models of rapid penetrating agent T mean?

A： These numbers usually represent the value of the productPercentage of effective active substance, this is a common marking method in chemical products:

• T-50： Represents the mass percentage of the effective active DOSS in the product is approximately50%。

• T-80： Indicates that the effective active content is higher, approximately80%。Customers can choose based on their own process requirements for active substance concentration.xinhaitiandifferent specifications ofRapid Penetrant T。

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7. In addition to being used in the field of textile printing and dyeing, in what other aspects can rapid penetrating agent T be used? (Hot spot: Purpose)

A： The extremely strong wettability and permeability of "Fast T" make itEight series of productsPlay a role in applications, especially in:

• Pesticide chemicals: as an efficientwetting agentsanddispersant, improve the coverage and adhesion of pesticide spraying.

• Leather chemicals: Used for leather degreasing and soaking processes to accelerate the penetration of treating agents.

• Industrial water treatment: As an auxiliary wetting component in water treatment chemicals.

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8. What is the stability of rapid penetrating agent T in solutions with high alkalinity or high electrolyte?

A： Rapid penetrating agent T belongs toanionictype surfactant, one of its core advantages is that it hasGood alkali and electrolyte resistance, far superior to many non-ionic or fatty alcohol penetrants. This makes it the most important thing for textile scouring, bleaching, etc.Highly harsh environmentIdeal choice under.

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9. If a large amount of foam is generated when using "Fast T", how should we effectively control it?

A： As a strong surfactant,"Fast T" easily produces foam during high-speed stirring or spraying.

• Control method: The most effective way is to add the right amount ofSilicone defoamer or defoaming dispersant。At the same time, optimize the feeding method and stirring speed of the equipment to avoid excessive introduction of air.

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10. How to adjust the amount of "fast T" according to different fabric types (such as cotton and linen and chemical fiber)?​

A： The amount must be determined based on the characteristics of the specific fiber:

• Cellulose fibers such as cotton and linen: The fiber contains natural impurities inside and has a tight structure. It is usually requiredHigher penetrant dosage(Generally 0.5 g/L to 3 g/L) to achieve thorough cooking.

• Synthetic fibers (such as polyester): The structure is relatively uniform and the penetration difficulty is relatively low.The amount can be appropriately reduced, mainly plays a wetting and dispersing role.xinhaitianIt is recommended that customers determine the best economic dosage based on the penetration speed test results under the guidance of professional technicians.

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Conclusion: Excellent products originate from professional research and development and strict quality control.Zhejiang Xinhaitian Biotechnology Co., Ltd.As a modern professional enterprise integrating R & D, production, sales and service, we are not only a producer of core products such as DADMAC, but also a producer of polymer chemicals that you haveRapid Penetrant TA reliable partner in applications. We sincerely look forward to seeking common development and win-win cooperation with customers around the world!