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306312

Sigma-Aldrich

Inhibitor removers

Prepacked column for removing hydroquinone and monomethyl ether hydroquinone

동의어(들):

Inhibition Removal Agents

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크기 선택

1 EA
₩186,253
12 EA
₩1,075,393

₩186,253

출고 가능일2025년 4월 21일세부사항

벌크 견적 요청
모든 사진(1)

크기 선택

보기 변경
1 EA
₩186,253
12 EA
₩1,075,393

About This Item

MDL number:
MFCD00081548
UNSPSC 코드:
12162002
PubChem Substance ID:
329753550
NACRES:
NA.23

₩186,253

출고 가능일2025년 4월 21일세부사항

벌크 견적 요청

vapor pressure

17 mmHg ( 20 °C)

Quality Level

100

양식

beads

컬럼 크기

17 mm × 240 mm

SMILES string

[Al]21O[Al](O2)O1

InChI

1S/2Al.3O

InChI key

TWNQGVIAIRXVLR-UHFFFAOYSA-N

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관련 카테고리

일반 설명

Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:
HQ/MEHQ: 3L at 100ppm
TBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.
Easy-to-use:
1. Prewashing of prepacked glass columns with a small amount of monomer is recommended.
2. Add monomer (or solvent) to an addition funnel which is secured above column.
3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.
4. For low-melting solid monomers, keep temperature of column above the melting point during use.
Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.
1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.

애플리케이션

Inhibitor remover is mainly used in the purification of methyl methacrylate monomer (MMA) and the removal of hydroquinone, which can be used for the synthesis of polymethyl methacrylate (PMMA).[1][2] It can also be used to purify and remove the inhibitor in N,N-dimethylacrylamide (DMAA) and hydroxylethyl methacrylate (HEMA), that can be used to fabricate a low-cost absorbent for metal absorption.[3]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

개인 보호 장비

Eyeshields, Gloves, type N95 (US)

가장 최신 버전 중 하나를 선택하세요:

시험 성적서(COA)

Lot/Batch Number
MKCV7379
MKCV7350
MKCS5932
MKCS5930
MKCS5809

적합한 버전을 찾을 수 없으신가요?

특정 버전이 필요한 경우 로트 번호나 배치 번호로 특정 인증서를 찾을 수 있습니다.

COA 검색

이 제품을 이미 가지고 계십니까?

문서 라이브러리에서 최근에 구매한 제품에 대한 문서를 찾아보세요.

문서 라이브러리 방문

Lead (II) removal by poly (N, N-dimethylacrylamide-co-2-hydroxyethyl methacrylate)
Ramos-Jacques AL, et al.
European Polymer Journal, 101, 262-272 (2018)
Study on the rheological and electrical properties of PMMA/MWCNT nanocomposites prepared by in situ polymerization assisted by sonication.
Junior VAA, et al.
AIP Conference Proceedings, 1981(1), 020077-020077 (2018)
Tibor Renkecz et al.
ACS applied materials & interfaces, 5(17), 8537-8545 (2013-08-22)
A versatile approach for the preparation of photoswitchable molecularly imprinted polymers (MIPs) is proposed where the selective recognition and the photoresponsive function are assumed by two different monomers. As a proof of concept, MIP microspheres were synthesized by precipitation polymerization
Electrically conductive nanocomposites of PMMA and carbon nanotubes prepared by in situ polymerization under probe sonication.
Bressanin JM, et al.
Chemical Papers, 1-12 (2018)
Subir Ghosh et al.
Journal of the mechanical behavior of biomedical materials, 87, 312-324 (2018-08-14)
A significant number of hip replacements (HR) fail permanently despite the success of the medical procedure, due to wear and progressive loss of osseointegration of implants. An ideal model should consist of materials with a high resistance to wear and
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문서

Initiator/Stabilizer FAQs

An article regarding common FAQs for initiators and stabilizers.

질문

1–9 / 9 질문  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 답변

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 답변

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. Would these work for removal of Topanol A, 2,4-Dimethyl-6-tert-butylphenol CAS Number:1879-09-0?

    1 답변

    1. This product is not tested for removal of Topanol A, but is expected to be suitable. The product is used for inhibitor removal for product 276685. Methacrylic anhydride, which contains 2,000 ppm Topanol A as inhibitor.

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  4. Which side of the column is the top versus the bottom?

    1 답변

    1. The label is placed at the top of the column and will include the lot number. The column is provided with a cap on each end; these caps would need to be removed when the column is in use, but replaced between uses.

      The glass wool plugs are present to hold the beads inside the column. Initially, a small volume of liquid will wet the glass wool. As more volume is added, the column will become saturated and then eventually pass through and out at the bottom of the column.

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  5. Can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, be used to remove butylated hydroxytoluene (BHT)?

    1 답변

    1. This inhibitor remover is not intended to remove BHT present in a monomer solution; little, if any, BHT will be removed with this column. Unfortunately, Sigma-Aldrich does not currently offer a inhibitor-remover column that will accomplish this purpose.

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  6. How much can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, hold at one time?

    1 답변

    1. This product has a bed volume of approximately 30 mL.

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  7. Can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, be used more than once?

    1 답변

    1. This pre-packed inhibitor remover column is meant for single use but can be rinsed and reused. If time will pass between uses, this column can be rinsed with methanol, dried, capped on both ends, and stored in a tightly sealed plastic bag in the freezer at -20°C.

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  8. What is the flow rate for Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone?

    1 답변

    1. According to the manufacturer of this inhibitor removal column, the maximum recommended flow rate is 4 bed volumes (approximately 120 mL) per hour.

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  9. What is the Department of Transportation shipping information for this product?

    1 답변

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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