PURIONX CHEMICALS (JIANGSU) CO., LIMITED PURIONX ISO 9001 · 14001 · 45001 200,000 m² Base · 63,000+ MT / year

PURIONX 201×7 (OH⁻)

Hydroxide-form 201×7 gel strong base anion resin for pure water and mixed-bed applications

Ionic Form
OH⁻
Strong-Base Capacity (mmol/g)
≥3.6 (3.8)
Volume Capacity (mmol/mL)
≥1.10
Water Retention (%)
53–58
Bulk Density (g/mL)
0.66–0.71
Optical Bead Specimen
Gel Strong Base Anion (SBA) · 201×7 (OH⁻)
R–N⁺(CH₃)₃
Gel Strong Base Anion (SBA) resin beads in a laboratory petri dish
0.315–1.25 mm
Appearance:Pale straw-yellow to ivory translucent spherical microbeads
Polymer Matrix
Styrene-DVB
Bead Structure
Gel
Active Site
R–N⁺(CH₃)₃
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Physical & Chemical Specification Sheet — 201×7 (OH⁻)

Styrene-Based Gel-Type Strong Base Anion Exchange Resin · Quaternary Ammonium (Type I & II)
R–N⁺(CH₃)₃
Grade Designation
201×7 (OH⁻)
Ionic Form
OH⁻
Strong-Base Capacity (mmol/g)
≥3.6 (3.8)
Volume Capacity (mmol/mL)
≥1.10
Water Retention (%)
53–58
Bulk Density (g/mL)
0.66–0.71
Specific Gravity (g/mL)
1.06–1.09
Particle Size Range (%)
0.315–1.25 mm ≥95
Effective Size (mm)
0.4–0.7
Uniformity Coeff.
≤1.4
Whole Bead After Attrition (%)
(≥90) ≥60
Reversible Swelling
Cl⁻ -> OH⁻ ≤27%
Color
Colorless to light yellow
Application & Engineering Notes
Hydroxide-form 201×7 gel strong base anion resin for pure water and mixed-bed applications
Custom particle size screening & ionic conversion available. COA issued per lot

Comparable International Brand Equivalents

Drop-in evaluation reference for 201×7 (OH⁻)
Purolite
A600
Dowex
SBR
Amberlite
IRA400
Lewatit
M500 / 511
Diaion
SA 10A
Duolite
A-109
ResinTech
SBG 1
Ion Plus
AN-21
GOST
AB-17-18
Third-party brand names are registered trademarks of their respective owners and are referenced solely for technical cross-reference.

Values shown represent standard production specifications. Every commercial shipment is accompanied by a lot-specific Certificate of Analysis (COA) issued by PURIONX CHEMICALS (JIANGSU) CO., LIMITED.

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