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538191

Butyraldehyd

≥99.0%, dry

Synonym(e):

Butanal

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Lineare Formel:
CH3CH2CH2CHO
CAS-Nummer:
Molekulargewicht:
72.11
UNSPSC Code:
12352114
NACRES:
NA.21
PubChem Substance ID:
EC Number:
204-646-6
Beilstein/REAXYS Number:
506061
MDL number:
Assay:
≥99.0%
Bp:
75 °C (lit.)
Vapor pressure:
90 mmHg ( 20 °C)
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vapor density

2.5 (vs air)

Quality Segment

vapor pressure

90 mmHg ( 20 °C)

assay

≥99.0%

autoignition temp.

390 °F

expl. lim.

12.5 %

impurities

≤0.30% (water)

refractive index

n20/D 1.380 (lit.)

bp

75 °C (lit.)

mp

−96 °C (lit.)

solubility

water: soluble 50 g/L at 20 °C

density

0.8 g/mL at 25 °C (lit.)

SMILES string

[H]C(=O)CCC

InChI

1S/C4H8O/c1-2-3-4-5/h4H,2-3H2,1H3

InChI key

ZTQSAGDEMFDKMZ-UHFFFAOYSA-N

General description

Butyraldehyde (n-Butyraldehyde), an aliphatic aldehyde, can be synthesized by dehydrogenation of butanol in the presence of zinc catalyst. It is an important precursor for preparing polyvinylbutyral. The mechanism of pyrolysis of butyraldehyde in the gas-phase has been described. The kinetic study of the condensation reaction between butyraldehyde and poly(vinyl alcohol) indicates retardation effect.

Application

Butyraldehyde (n-Butyraldehyde) may be used in the preparation of 2-ethylhexanal (2EH) via hydrogenation in the presence of tetraamine palladium(II) chloride supported on the potassium ion-exchanged zeolite X (Pd/KXW) and on the potassium ion-added zeolite X (Pd/KXU).


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pictograms

FlameExclamation mark

signalword

Danger

hcodes

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 2

Lagerklasse

3 - Flammable liquids

flash_point_f

12.2 °F - closed cup

flash_point_c

-11 °C - closed cup


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123-72-8

CAS No.


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  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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