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345830

3-Brom-2-methylpropen

97%

Synonym(e):

Methallylbromid, Methylallylbromid

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Ihnen/SKUVerfügbarkeitPreis
5 mL
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€ 97,10
€ 72,82
25 mL
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€ 246,00
€ 209,10

Über diesen Artikel

Lineare Formel:
H2C=C(CH3)CH2Br
CAS-Nummer:
Molekulargewicht:
135.00
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352100
MDL number:
Assay:
97%
Form:
liquid

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Quality Segment

assay

97%

form

liquid

impurities

0.1% hydroquinone

refractive index

n20/D 1.472 (lit.)

bp

94-95 °C (lit.)

density

1.339 g/mL at 25 °C (lit.)

functional group

alkyl halide, bromo

storage temp.

2-8°C

SMILES string

CC(=C)CBr

InChI

1S/C4H7Br/c1-4(2)3-5/h1,3H2,2H3

InChI key

USEGQJLHQSTGHW-UHFFFAOYSA-N

General description

Rotational isomerism in 3-bromo-2-methylpropene has been studied by IR spectroscopy.

Application

Used in a study of chiral phase transfer alkylation leading to (S)-α-alkylcysteines.

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Dieser Artikel
156582C81217244732
description

97%

description

99%

description

97%

description

contains copper as stabilizer, 97%

assay

97%

assay

99%

assay

97%

assay

97%

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

100

refractive index

n20/D 1.472 (lit.)

refractive index

n20/D 1.435 (lit.)

refractive index

n20/D 1.621 (lit.)

refractive index

n20/D 1.496 (lit.)

bp

94-95 °C (lit.)

bp

90-92 °C (lit.)

bp

103 °C/22 mmHg (lit.)

bp

120-121 °C (lit.)

storage temp.

2-8°C

storage temp.

-

storage temp.

2-8°C

storage temp.

-

density

1.339 g/mL at 25 °C (lit.)

density

1.26 g/mL at 20 °C (lit.)

density

1.332 g/mL at 25 °C (lit.)

density

1.599 g/mL at 25 °C (lit.)


signalword

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

Lagerklasse

3 - Flammable liquids

wgk

WGK 3

flash_point_f

44.6 °F - closed cup

flash_point_c

7 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter



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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

      Helpful?

  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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