Industrial, Pharmaceutical & High Purity Grade N-Ethyl-p-toluenesulfonamide (ETSA) CAS 101-96-2 Polyamide Resin Plasticizer

N,N'-Dicyclohexylcarbodiimide (Abbr: DCC, CAS:101-96-2,EINECS:202-993-6, HS Code:2925200000) is a white to pale yellow crystalline solid, a classic carbodiimide-type dehydrating and condensation agent. We supply industrial grade and pharmaceutical grade products complying with international quality standards. It is soluble in dichloromethane, tetrahydrofuran, DMF and most organic solvents, insoluble in water, with high reactivity and mild reaction conditions. Widely used as a dehydrating agent in organic synthesis, peptide synthesis, pharmaceutical intermediate production and polymer synthesis.

Applications
Peptide & Protein Synthesis (Core Application)
The most widely used coupling agent in solid-phase and liquid-phase peptide synthesis. It efficiently promotes the formation of amide bonds between amino acids, with mild room-temperature reaction conditions, high conversion rate and few side reactions. It is an indispensable core reagent for polypeptide drug synthesis, protein modification and biological peptide research.
Pharmaceutical Intermediate Synthesis
Key dehydrating agent for synthesizing pharmaceutical intermediates, active pharmaceutical ingredients (APIs) and fine chemicals. It is used for esterification, amidation and anhydride formation reactions in the production of antibiotics, anti-tumor drugs and cardiovascular drugs, significantly improving product yield and purity.
Organic Synthesis & Fine Chemicals
Versatile dehydrating and condensation agent for various organic reactions. It is applied in the synthesis of esters, anhydrides, amides, ketones and heterocyclic compounds, and also used for dehydration of alcohols to alkenes, widely used in fine chemical and specialty chemical production.
Polymer & Material Science
Used as crosslinking agent and dehydrating agent in polymer synthesis. It promotes crosslinking of polyamides, polyesters and polyurethane resins, improves polymer molecular weight and mechanical properties, and is also applied in the preparation of functional polymer materials and biocompatible materials.
Dye & Pigment Industry
Applied as condensation agent in the synthesis of reactive dyes, organic pigments and dye intermediates. It improves reaction conversion rate, reduces by-product generation, and enhances dye color brightness and fastness properties.
Agricultural Chemical Synthesis
Used as dehydrating agent in the production of pesticides, herbicides and plant growth regulators. It optimizes synthesis process, improves product purity, and reduces production cost for agrochemical manufacturing.

Product Advantages
✅ High reactivity & efficiency: Fast condensation reaction at room temperature, high conversion rate, low dosage requirement
✅ Mild reaction conditions: No high temperature or high pressure needed, suitable for heat-sensitive substrates like peptides
✅ High purity & low impurities: ≥99% purity, minimal side reactions, easy product purification after reaction
✅ Wide solvent compatibility: Soluble in most common organic solvents, suitable for various reaction systems
✅ Stable quality: Consistent batch performance, reliable reactivity for large-scale production
✅ Mature supply chain: Stable production capacity, competitive price and reliable delivery for industrial use

Packaging & Storage
Standard packaging: 25kg sealed fiber drums with inner PE liner; 1kg/5kg small packaging available for laboratory use. Store in a cool, dry and well-ventilated warehouse at 2–8°C, away from moisture, heat sources and direct sunlight. Keep containers tightly sealed, avoid contact with acids, water and oxidizing agents. Shelf life is 12 months under proper storage conditions.
Safety Information
Classified as harmful and irritant substance for transportation (UN 2928, Class 6.1). It is irritating to skin, eyes and respiratory tract, and may cause allergic reactions. Avoid contact with skin, eyes and inhalation of dust. Wear protective gloves, goggles and dust mask during handling. In case of contact, rinse immediately with plenty of clean water and seek medical attention. Complete MSDS and relevant qualification certificates are available upon request.

1. 1.A 70,000 ㎡ warehouse (20,000 MT capacity) with moisture-proof and temperature-controlled systems, enabling efficient fulfillment of large-volume orders.
2. 2.Free samples (Ship within 3-7 days) to let you test products at zero trial cost.
3. 3.Transparent lead time for hazardous chemicals: 45–60 days, with clear delivery schedules.
4. 4.Certified with a Hazardous Chemical Business License and ISO certification, ensuring smooth customs clearance.
5. 5.6 packaging options with customizable logos to minimize product loss during transportation.
6. 6.Over 400 chemical SKUs available for one-stop procurement, helping you reduce sourcing costs.