DuPont Ion Exchange Resin

DuPont ion exchange resins are copolymer with microporous structures of styrene-divinylbenzene copolymer, and produced by controlling the particle size by the suspension polymerization method. The features of DuPont ion exchange resin are [1] it can withstand oxidation, reduction, mechanical wear and breakage, [2] it shows more reliable and reproducible performance than crushed resin, and [3] the particle size and the degree of cross-linking (or water content) are controlled.

DuPont ion exchange resin has different performance depending on the combination of resin type (cation or anion), degree of cross-linking (rate of divinylbenzene), and mesh size, so please use it according to your application.

There are three types of ion exchange resin as follows.
50W: Strongly acidic cation exchange resin
1: Strongly basic anion exchange resin, type I
2: Strongly basic anion exchange resin, type II

The product name has changed due to the shift of Dow ion exchange resin business to DuPont. The comparison table is as follows. The only change is the product name, the quality and performance are same as the corresponding Dow product.

Strongly Acidic Cation Exchange Resin

Code No.	Volume	Dow Ion Exchange Resin (without trademark)	Code No.	New Product Name
322-97561	100 mL	50Wx2 50-100 Mesh (H) Cation Exchange Resin	353-45621	Strong Acidic Cation Exchange Resin No.1 (2% Cross-linking, 50-100 Mesh, H Type)
324-97565	500 mL		355-45625
325-97551	100 mL	50Wx2 100-200 Mesh (H) Cation Exchange Resin	351-45661	Strong Acidic Cation Exchange Resin No.2 (2% Cross-linking, 100-200 Mesh, H Type)
327-97555	500 mL		353-45665
359-27261	100 mL	50Wx2 200-400 Mesh (H) Cation Exchange Resin	359-27261	Strong Acidic Cation Exchange Resin 50Wx2 200-400 Mesh (H Form)
351-27265	500 mL		351-27265
356-27271	100 mL	50Wx4 50-100 Mesh (H) Cation Exchange Resin	356-27271	No Change*
358-27275	500 mL		358-27275
329-97571	100 mL	50Wx4 100-200 Mesh (H) Cation Exchange Resin	329-97571	No Change*
321-97575	500 mL		321-97575
353-27281	100 mL	50Wx4 200-400 Mesh (H) Cation Exchange Resin	353-27281	Strong Acidic Cation Exchange Resin 50Wx4 200-400 Mesh (H Form)
355-27285	500 mL		355-27285
323-97591	100 mL	50Wx8 50-100 Mesh (H) Cation Exchange Resin	355-45681	Strong Acidic Cation Exchange Resin No.4 (8% Cross-linking, 50-100 Mesh, H Type)
325-97595	500 mL		357-45685
328-97541	100 mL	50Wx8 100-200 Mesh (H) Cation Exchange Resin	352-45691	Strong Acidic Cation Exchange Resin No.5 (8% Cross-linking, 100-200 Mesh, H Type)
320-97545	500 mL		354-45695
326-97581	100 mL	50Wx8 200-400 Mesh (H) Cation Exchange Resin	355-45701	Strong Acidic Cation Exchange Resin No.6 (8% Cross-linking, 200-400 Mesh, H Type)
328-97585	500 mL		357-45705
357-14371	100 mL	HCR-S (Na) Cation Exchange Resin	357-14371	Strong Acidic Cation Exchange Resin HCR-S (Na Form)
353-14373	500 mL		353-14373
354-14381	100 mL	650C (H) Cation Exchange Resin	352-45711	Strong Acidic Cation Exchange Resin No.7 (H Type)
350-14383	1000 mL		358-45713
354-14401	100 mL	C-10 (Na) Cation Exchange Resin	354-14401	Strong Acidic Cation Exchange Resin C-10 (Na Form)
350-14403	1000 mL		350-14403
353-14471	100 mL	22 Anion Exchange Resin	353-14471	Strong Basic Anion Exchange Resin 22 (Type II, Cl Form)
359-14473	1000 mL		359-14473
356-14461	100 mL	MSA-2 Anion Exchange Resin	356-14461	Strong Basic Anion Exchange Resin MSA-2 (Type II, Cl Form)
352-14463	1000 mL		352-14463
359-14451	100 mL	A2 Anion Exchange Resin	359-14451	Strong Basic Anion Exchange Resin A2 (Type II, Cl Form)
355-14453	1000 mL		355-14453

* As soon as sold out, we will change the product name. For more information, please contact our sales.

Strongly Basic Anion Exchange Resin

Code No.	Volume	Dow Ion Exchange Resin (without trademark)	Code No.	New Product Name
323-97471	100 mL	1x2 50-100 Mesh Anion Exchange Resin	323-97471	No Change*
325-97475	500 mL		325-97475
326-97461	100 mL	1x2 100-200 Mesh Anion Exchange Resin	356-45731	Strong Basic Anion Exchange Resin No.2 (2% Cross-linking, 100-200 Mesh, Cl Type)
328-97465	500 mL		358-45735
352-27251	100 mL	1x2 200-400 Mesh Anion Exchange Resin	352-27251	Strong Basic Anion Exchange Resin 1x2 200-400 Mesh (Type I, Cl Form)
354-27255	500 mL		354-27255
320-97481	100 mL	1x4 20-50 Mesh Anion Exchange Resin	320-97481	Strong Basic Anion Exchange Resin 1x4 20-50 Mesh (Type I, Cl Form)
322-97485	500 mL		322-97485
327-97511	100 mL	1x4 50-100 Mesh Anion Exchange Resin	353-45741	Strong Basic Anion Exchange Resin No.3 (4% Cross-linking, 50-100 Mesh, Cl Type)
329-97515	500 mL		355-45745
320-97501	100 mL	1x4 100-200 Mesh Anion Exchange Resin	350-45751	Strong Basic Anion Exchange Resin No.4 (4% Cross-linking, 100-200 Mesh, Cl Type)
322-97505	500 mL		352-45755
355-27241	100 mL	1x4 200-400 Mesh Anion Exchange Resin	355-27241	Strong Basic Anion Exchange Resin 1x4 200-400 Mesh (Type I, Cl Form)
357-27245	500 mL		357-27245
324-97521	100 mL	1x8 50-100 Mesh Anion Exchange Resin	357-45761	Strong Basic Anion Exchange Resin No.5 (8% Cross-linking, 50-100 Mesh, Cl Type)
326-97525	500 mL		359-45765
327-97491	100 mL	1x8 100-200 Mesh Anion Exchange Resin	354-45771	Strong Basic Anion Exchange Resin No.6 (8% Cross-linking, 100-200 Mesh, Cl Type)
329-97495	500 mL		356-45775
321-97531	100 mL	1x8 200-400 Mesh Anion Exchange Resin	351-45781	Strong Basic Anion Exchange Resin No.7(8% Cross-linking, 200-400 Mesh, Cl Type)
323-97535	500 mL		353-45785
358-14421	100 mL	A Anion Exchange Resin	358-14421	Strong Basic Anion Exchange Resin A (Type I, Cl Form)
352-14441	100 mL	MSA Anion Exchange Resin	352-14441	Strong Basic Anion Exchange Resin MSA (Type I, Cl Form)
355-14431	100 mL	550A (OH) Anion Exchange Resin	358-45791	Strong Basic Anion Exchange Resin No.8 (OH Type)
351-14433	1000 mL		354-45793
353-14471	100 mL	22 Anion Exchange Resin	353-14471	Strong Basic Anion Exchange Resin 22 (Type II, Cl Form)
359-14473	1000 mL		359-14473
356-14461	100 mL	MSA-2 Anion Exchange Resin	356-14461	Strong Basic Anion Exchange Resin MSA-2 (Type II, Cl Form)
352-14463	1000 mL		352-14463
359-14451	100 mL	A2 Anion Exchange Resin	359-14451	Strong Basic Anion Exchange Resin A2 (Type II, Cl Form)
355-14453	1000 mL		355-14453

* As soon as sold out, we will change the product name. For more information, please contact our sales.

Weakly Basic Anion Exchange Resin

Code No.	Volume	Dow Ion Exchange Resin (without trademark)	Code No.	New Product Name
350-14481	100 mL	66 Anion Exchange Resin	350-14481	Weak Basic Anion Exchange Resin 66 (Free Base Form)
356-14483	1000 mL		356-14483
350-14501	100 mL	77 Anion Exchange Resin	350-14501	Weak Basic Anion Exchange Resin 77 (Free Base Form)
356-14503	1000 mL		356-14503

Strongly Acidic Cation Exchange Resin (functional group: Sulfonic acid)

Code No.	Volume	Resins	Degree of Cross-Linking (%)	Mesh Size	Ionic Form	Water Retention Capacity (%)	Total Exchange Capacity (meq/mL)	Durable Temperature (℃)
353-45621	100 mL	No.1 (50Wx2)	2	50-100	H+	74-82	0.6	150
355-45625	500 mL
351-45661	100 mL	No.2 (50Wx2)	2	100-200	H+	74-82	0.6	150
353-45665	500 mL
359-27261	100 mL	50Wx2	2	200-400	H+	74-82	0.6	150
351-27265	500 mL
356-27271	100 mL	50Wx4	4	50-100	H+	64-72	1.1	150
358-27275	500mL
329-97571	100 mL	50Wx4	4	100-200	H+	64-72	1.1	150
321-97575	500 mL
353-27281	100 mL	50Wx4	4	200-400	H+	64-72	1.1	150
355-27285	500 mL
355-45681	100 mL	No.4 (50Wx8)	8	50-100	H+	50-56	1.7	150
357-45685	500 mL
352-45691	100 mL	No.5 (50Wx8)	8	100-200	H+	50-58	1.7	150
354-45695	500 mL
355-45701	100 mL	No.6 (50Wx8)	8	200-400	H+	50-58	1.7	150
357-45705	500 mL
357-14371	100 mL	HCR-S	-	300-1200 μm	Na+	44-48	2	120
353-14373	1000 mL
352-45711	100 mL	No.7 (650C)	-	650±50 μm	H+	46-51	2	130
358-45713	1000 mL
354-14401	100 mL	C-10	-	740±50 μm	Na+	40-45	2.2	130
350-14403	1000 mL

Strongly Basic Anion Exchange Resin Type I (functional group: Benzyltrimethyl ammonium)

Code No.	Volume	Resins	Degree of Cross-Linking (%)	Mesh Size	Ionic Form	Water Retention Capacity (%)	Total Exchange Capacity (meq/mL)	Durable Temperature (℃)
323-97471	100 mL	1x2	2	50-100	Cl-	65-75	0.7	100
325-97475	500 mL
356-45731	100 mL	No.2 (1x2)	2	100-200	Cl-	70-80	0.6	100
358-45735	500 mL
352-27251	100 mL	1x2	2	200-400	Cl-	70-80	0.6	100
354-27255	500 mL
320-97481	100 mL	1x4	4	20-50	Cl-	50 min.	1	100
322-97485	500 mL
353-45741	100 mL	No.3 (1x4)	4	50-100	Cl-	50 min.	1	100
355-45745	500 mL
350-45751	100 mL	No.4 (1x4)	4	100-200	Cl-	55-63	1	100
352-45755	500 mL
355-27241	100 mL	1x4	4	200-400	Cl-	55-63	1	100
357-27245	500 mL
357-45761	100 mL	No.5 (1x8)	8	50-100	Cl-	43-48	1.2	100
359-45765	500 mL
354-45771	100 mL	No.6 (1x8)	8	100-200	Cl-	39-45	1.2	100
356-45775	500 mL
351-45781	100 mL	No.7 (1x8)	8	200-400	Cl-	39-45	1.2	100
353-45785	500 mL
358-14421	100 mL	A	-	610±50 μm	Cl-	60-72	1	60
352-14441	100 mL	MSA	-	640±50 μm	Cl-	55-66	1.1	100
358-45791	100 mL	No.8 (550A)	-	590±50 μm	OH-	55-66	1.1	60
354-45793	1000 mL

Strongly Basic Anion Exchange Resin Type II (functional group: Dimethylethanolbenzylammonium)

Code No.	Volume	Resins	Degree of Cross-Linking (%)	Mesh Size	Ionic Form	Water Retention Capacity (%)	Total Exchange Capacity (meq/mL)	Durable Temperature (℃)
353-14471	100 mL	22	-	300-1200 μm	Cl-	48-56	1.2	46
359-14473	1000 mL
356-14461	100 mL	MSA-2	-	300-1200 μm	Cl-	48-56	1.1	70
352-14463	1000 mL
359-14451	100 mL	A2	-	570±50 μm	Cl-	45-54	1.2	70
355-14453	1000 mL

Weakly Basic Anion Exchange Resin (functional group: Amine)

Code No.	Volume	Resins	Degree of Cross-Linking (%)	Mesh Size	Ionic Form	Water Retention Capacity (%)	Total Exchange Capacity (meq/mL)	Durable Temperature (℃)
350-14481	100 mL	66	-	300-1200 μm	Free salt	40-56	1.6	60
356-14483	1000 mL
350-14501	100 mL	77	-	475-600 μm	Free salt	40-50	1.7	60
356-14503	1000 mL

Q1. What storage method is recommended?

Store indoors in a cool, dark room at room temperature (0-30°C), avoiding high temperature and high humidity.

Q2. How do I handle the ion exchange resin?

In normal use, the resin is soaked in pure water overnight. If you want to convert the ion form of the purchased ion exchange resin to another ion form, you can convert the ion form by using a chemical solution containing the ion you want to convert. For example, if you want to convert H-type cation exchange resin to Na-type, you can convert it to Na-type by dipping and rinsing by 1N NaCl. In the purification of organic solvents, the resin may be dried before use. The drying temperature must not exceed the applicable temperature of the resin (see the physical characteristics table for the durable temperature).

Q3. What precautions should be taken when using ion exchange resin?

When in contact with strong oxidizing agents such as nitric acid, ion exchange resins are immediately oxidized, which can cause explosive reactions under some conditions. Wear safety glasses to protect your eyes and face. In case of contact with eyes, wash eyes with plenty of water. If spilled on the floor, it is a dangerous slippery. Wipe off immediately. Please refer to SDS for details.

Q4. How to convert the ion form of the ion exchange resin?

Strongly acidic cation exchange resin

• Type H to Na： Pack the ion exchange resin in a column and pass 2 - 4 BV* of 0.5 - 2.0% sodium chloride aqueous solution or sodium hydroxide aqueous solution. At this time, the contact time of the solution should be at least 15 minutes (the acidic or neutral solution flows out while the ionic form is being converted).
• Type H to K： Pass 3 - 4.5 BV* of 0.5 M ( - 3 wt%) potassium hydroxide aqueous solution.
• Type Na to H： Pass 5 - 6 BV* of 5 - 8% aqueous hydrochloric acid solution and wash with pure water until the extract is near neutral.

Strongly basic anion exchange resin

• Type Cl to OH： Pack the ion exchange resin in a column and pass 5 - 10 BV* of 4% aqueous sodium hydroxide solution. At this time, allow the liquid to pass slowly so that the contact time of the liquid is at least 1 hour. Then wash with pure water until the extract is almost neutral.

Weakly basic anion exchange resin

• Type Cl to OH： Pack the ion exchange resin in a column and pass and allow 2 - 4 BV* of 4% aqueous sodium hydroxide solution. At this time, allow the liquid to pass slowly so that the contact time of the liquid is at least 30 minutes. Then wash with pure water until the extract is almost neutral.

* BV (Bed Volume): The volume of the filled ion exchange resin is 1 BV.

Q5. How to regenerate the ion exchange resin?

The type and concentration of the chemical solution used depends on the resin to be regenerated. The chemical solutions and concentrations commonly used for regeneration are:

• Strongly acidic cation exchange resin: 3 - 8% hydrochloric acid aqueous solution or sulfuric acid aqueous solution
• Strongly basic anion exchange resin: 3 - 8% aqueous sodium hydroxide solution
• Weakly basic anion exchange resin: 0.5 - 5% aqueous sodium hydroxide solution

The standard contact time of the chemical solution is about 30 minutes for the strongly acidic cation exchange resin and about 45 minutes for the strongly basic anion exchange resin.
However, there is no guarantee that this method will return 100% of the product to the condition it was in when it was delivered. It is common to control how much resin can be regenerated with respect to the chemical solution used.