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


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


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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