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4-Mercapto-4-methyl-2-pentanone is one of the most strongly contributing odorants in the volatile fraction of a Japanese green tea (sen-cha) infusion, and on the basis of the results of an aroma extract dilution analysis. 4-mercapto-4-methyl-2-pentanone in the grapefruit/sulfury group was found in reconstituted concentrate after thermal concentration.
Kenji Kumazawa,; Kikue Kubota,; Hideki Masuda. Influence of Manufacturing Conditions and Crop Season on the Formation of 4-Mercapto-4-methyl-2-pentanone in Japanese Green Tea (Sen-cha) . J. Agric. Food Chem. 2005, 53 (13), 5390-5396.
Jianming Lin,; Russell L. Rouseff,; Sandy Barros,; Michael Naim. Aroma Composition Changes in Early Season Grapefruit Juice Produced from Thermal Concentration. J. Agric. Food Chem. 2002, 50 (4),813-819.
Hazard Statements: H226-H319-H335
Flammable liquid and vapour. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statements: P210-P233-P235-P240-P241-P242-P243-P261-P264b-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P312-P337+P313-P370+P378q-P501c
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Keep cool. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If eye irritation persists: Get medical advice/attention. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant