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275212

Sigma-Aldrich

Crotonaldehyde, predominantly trans

98%

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About This Item

Linear Formula:
CH3CH=CHCHO
CAS Number:
123-73-9
Molecular Weight:
70.09
EC Number:
204-647-1
MDL number:
MFCD00007003
UNSPSC Code:
12352100
PubChem Substance ID:
24856634

vapor density

2.41 (vs air)

vapor pressure

32 mmHg ( 20 °C)

assay

98%

autoignition temp.

320 °F

expl. lim.

19.5 %

refractive index

n20/D 1.4362 (lit.)

bp

104 °C (lit.)

mp

−76 °C (lit.)

density

0.846 g/mL at 25 °C (lit.)

SMILES string

[H]\C(C)=C(\[H])C([H])=O

InChI

1S/C4H6O/c1-2-3-4-5/h2-4H,1H3/b3-2+

InChI key

MLUCVPSAIODCQM-NSCUHMNNSA-N

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Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Eye Dam. 1 - Flam. Liq. 2 - Muta. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

48.2 °F - closed cup

flash_point_c

9 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
03310AJ
10208PH
S44751
15230TD
12008LC

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