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trans-2-Methyl-2-butenal, 97% - CAS 497-03-0 - Formula C5H8O

L08113 497-03-0 trans-2-Methyl-2-butenal, 97% 2-Methylcrotonaldehyde Tiglic aldehyde Alfa Aesar


Certificate of Analysis

trans-2-Methyl-2-butenal, 97%

CAS: 497-03-0 MDL: MFCD00006977  EINECS: 207-833-0
UN#:UN1989Hazard Class:3Packing Group:II
Alternate Name: 2-Methylcrotonaldehyde
Tiglic aldehyde


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
5g 36.80 Check Availability Add to Favorites Enter qty and click checkbox
25g 108.00 Check Availability Add to Favorites Enter qty and click checkbox

Chemical Properties

Formula: C5H8O  Density: 0.871
Formula weight: 84.12  Refractive Index: 1.4480
Boiling point: 117-119° Sensitivity: Air Sensitive
Flash point: 18°(64°F) 

Other References

Beilstein: 1698207
UN#: UN1989
Harmonized Tariff Code: 2912.19

GHS Hazard and Precautionary Statements

Hazard Statements : H225-H315-H319-H335

Highly flammable liquid and vapour. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements : P210-P261-P303+P361+P353-P305+P351+P338-P405-P501A

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

FlammableHarmful or Irritant

Risk & Safety

Risk Phrases: 11-36/37/38
Flammable. Irritating to eyes, respiratory system and skin.
Safety Phrases: 16-26-33-37
Keep away from sources of ignition - No Smoking. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Take precautionary measures against static discharges. Wear suitable gloves.
Irritant Highly Flammable