Description

Sybron Ionac SR-7 is a high-performance, strongly acidic cation exchange resin designed for demanding industrial separation and purification processes. This product is critical for applications requiring exceptional chemical stability, high capacity, and reliable regeneration cycles. It is essential for industries such as water treatment, chemical processing, and hydrometallurgy where precise ion removal is paramount for product quality and process efficiency.

Application

• Industrial Water Demineralization: Used in mixed-bed or multi-column systems to produce high-purity deionized (DI) water for power generation, electronics manufacturing, and laboratory use.
• Chemical Process Catalysis & Purification: Serves as a catalyst or purification medium in organic synthesis, sugar decolorization, and the removal of metal cations from process streams.
• Hydrometallurgy & Metal Recovery: Employed for the selective recovery and concentration of valuable metals like copper, nickel, and rare earth elements from leach solutions.
• Condensate Polishing: Critical in power plants for polishing boiler feedwater and condensate to protect turbines from corrosion and scaling.
• Pharmaceutical & Fine Chemical Purification: Used to purify intermediates and active pharmaceutical ingredients (APIs) by removing ionic impurities.
• Food & Beverage Processing: Applied in the softening and dealkalization of water used in production, as well as in the purification of sweeteners and other food-grade products.

Basic Information

Product Name	Sybron Ionac Sr-7
CAS No.	186709-08-0
Molecular Formula	(C8H8)n · (C3H5SO3H)m (Polymeric matrix)
Molecular Weight	N/A (Macroreticular polymer)
Synonyms	Ionac SR-7; Sybron Cation Exchange Resin SR-7; Strong Acid Cation Exchange Resin Gel Type; Polystyrene Sulfonic Acid Resin; SAC Resin; Cation Exchanger SR-7; Hydrogen Form Cation Resin; 8% Crosslinked DVB Sulfonic Acid Resin
EINECS	Contact for details

Quality Control

Every batch of Sybron Ionac SR-7 is manufactured and tested under a strict quality management system to ensure consistent performance. Key parameters such as total exchange capacity, moisture holding capacity, bead size distribution, and chemical stability are rigorously verified. A Certificate of Analysis (COA) detailing these specifications is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). The resin should be kept in its original packaging or in a moist state to prevent drying out, which can cause bead fracture. Isolate from strong oxidizing agents and strong bases.

Specification

Item	Specification
Matrix	Styrene-Divinylbenzene Copolymer (Gel)
Functional Group	Sulfonic Acid (-SO3H)
Ionic Form as Shipped	Hydrogen (H+)
Total Exchange Capacity	≥ 1.8 eq/L (min)
Moisture Holding Capacity	45 - 55%
Particle Size Range	0.3 - 1.2 mm (Standard Grade)
Uniformity Coefficient	≤ 1.7
Maximum Operating Temperature	120°C (H+ form)
pH Range	0 - 14

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.