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413135

2,2′-Methylenebis(6-tert-butyl-4-methylphenol)

Synonym(s):

2,2′-Methylenebis(4-methyl-6-tert-butylphenol), 2,2′-Methylenebis(6-tert-butyl-p-cresol), 6,6-Methylenebis(2-tert-butyl-4-methylphenol)

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About This Item

Linear Formula:
CH2[C6H2[C(CH3)3](CH3)OH]2
CAS Number:
Molecular Weight:
340.50
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
EC Number:
204-327-1
MDL number:
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form

powder

Quality Segment

mp

123-127 °C (lit.)

SMILES string

Cc1cc(Cc2cc(C)cc(c2O)C(C)(C)C)c(O)c(c1)C(C)(C)C

InChI

1S/C23H32O2/c1-14-9-16(20(24)18(11-14)22(3,4)5)13-17-10-15(2)12-19(21(17)25)23(6,7)8/h9-12,24-25H,13H2,1-8H3

InChI key

KGRVJHAUYBGFFP-UHFFFAOYSA-N

General description

2,2′-Methylenebis(6-tert-butyl-4-methylphenol) is a phenolic antioxidant commonly used in increasing the oxidation stability in rubber and plastic industries.

Application

It may be incorporated into the bromobutyl rubber(BIIR) matrix to enhance the overall thermo-reversibility of dicyclopentadiene dicarboxylic acid (DCPDCA) cross-linked BIIR. It may also be used as an antioxidant which shows a higher oxidation stability in distilled biodiesel.

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This Item
4079414131438.18447
mp

123-127 °C (lit.)

mp

197-199 °C (lit.)

mp

119-122 °C (lit.)

mp

125-132 °C (Lit.)

form

powder

form

-

form

powder

form

crystals

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

200


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pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Repr. 1B

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 2

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    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/418/501/product-dating-information-06-25-mk.pdf

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

    1 answer
    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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