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Description References

CAS No. 141-79-7
Chemical Name: MESITYL OXIDE
Synonyms: mesityl;FEMA 3368;Mesityloxid;Mesityloxyde;MESITYL OXIDE;femanumber3368;mesityl oxnide;Mesityloxide 0;oxydedemesityle;MesitylOxide91%
CBNumber: CB2139085
Molecular Formula: C6H10O
Formula Weight: 98.14
MOL File: 141-79-7.mol
Melting point : −53 °C(lit.)
Boiling point : 129 °C(lit.)
density : 0.858 g/mL at 25 °C(lit.)
FEMA : 3368
refractive index : n20/D 1.442(lit.)
Fp : 87 °F
storage temp. : Flammables area
Water Solubility : 28 G/L (20 ºC)
Merck : 14,5908
BRN : 1361550
CAS DataBase Reference: 141-79-7(CAS DataBase Reference)
NIST Chemistry Reference: 3-Penten-2-one, 4-methyl-(141-79-7)
EPA Substance Registry System: 3-Penten-2-one, 4-methyl-(141-79-7)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes : Xn
Risk Statements : 10-20/21/22-36/37/38
Safety Statements : 25
RIDADR : UN 1229 3/PG 3
WGK Germany : 1
RTECS : SB4200000
TSCA : Yes
HazardClass : 3
PackingGroup : III
Hazardous Substances Data: 141-79-7(Hazardous Substances Data)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
Precautionary statements:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P311 Call a POISON CENTER or doctor/physician.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.

MESITYL OXIDE Chemical Properties,Usage,Production

Mesity oxide is a tri-functional intermediate of considerable utility in the synthesis of a number of different types of organic compounds, such as mesityl oxide can be hydrogenated to methyl isobutyl ketone and other flavor ingredients in foods, such as 4- methyl-pentanone. Mesityl oxide can be used as a solvent for resins, gums, nitrocellulose, oils, lacquers, and inks. It is also used as an insect repellant and used in ore flotation.
[1] Pradyot Patnaik, A Comprehensive Guide to the Hazardous Properties of Chemical Substances, 3rd Edition, 2007
[2] Klaus Weissermel, and Hans-Jürgen Arpe, Industrial Organic Chemistry, 3rd Edition, 1997
[3] George A. Burdock, Fenaroli’s Handbook of Flavor Ingredients, 4th Edition, 2001
Chemical Properties
General Description
A colorless, oily liquid with a pungent honey-like odor. Flash point 87°F. Less dense than water and slightly soluble in water. Vapors heavier than air. Used in paint removers, as a solvent for plastics, and as an insect repellent.
Air & Water Reactions
Highly flammable. Slightly soluble in water
Reactivity Profile
Mixing MESITYL OXIDE in equal molar proportions with any of the following substances in a closed container caused the temperature and pressure to increase: 2-aminoethanol, chlorosulfonic acid, ethylene diamine, nitric acid, oleum, or sulfuric acid [NFPA 1991].
Health Hazard
Inhalation causes irritation of nose and throat, headache, dizziness, difficult breathing. Contact with liquid or concentrated vapor causes severe eye irritation. Liquid irritates skin. Ingestion causes irritation of mouth and stomach.
Fire Hazard
Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
MESITYL OXIDE Preparation Products And Raw materials
Raw materials
Preparation Products
Damascenone 4,4-DIMETHYL-2-PENTANONE 4-AMINO-4-METHYL-2-PENTANONE HYDROGENOXALATE 1-(2,6,6-trimethyl-3-cyclohexen-1-yl)-2-buten-1-one ADS
MESITYL OXIDE Suppliers      Global( 136)Suppliers     
Supplier Tel Fax Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96832 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40403 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30315 84
TCI (Shanghai) Development Co., Ltd. 800-988-0390
021-67121385 China 22833 81
Beijing dtftchem Technology Co., Ltd. 13651141086; 86(10)60275028、60275820
86 (10) 60270825 China 1443 62
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44198 61
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
+86-10-82967029 China 10814 60
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
86-021-50426522,50426273 China 10094 60
Shanghai Sinch Parmaceuticals Tech. Co. Ltd. +86-21-54098501
+86-21-54096319 China 11620 64
Jia Xing Isenchem Co.,Ltd 0573-85280080,15157346371
0573-85285100,QQ:2446116053 China 9827 66
141-79-7(MESITYL OXIDE)Related Search:
PHENYL-P-BENZOQUINONE 3,5-Dimethyl-2-cyclohexen-1-one 2,6-DIMETHYLBENZOQUINONE (-)-VERBENONE 4-CARBETHOXY-3-METHYL-2-CYCLOHEXEN-1-ONE 4-CARBETHOXY-2-ETHYL-3-METHYL-2-CYCLOHEXEN-1-ONE 2,5-Dimethyl-3,4-diphenylcyclopentadienone 3-Methyl-2-cyclohexen-1-one 3-Methyl-2-cyclopenten-1-one Isophorone 2,5-DIPHENYL-P-BENZOQUINONE DUROQUINONE 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone p-Toluquinone 2,3-Dimethoxy-5-methyl-p-benzoquinone Colchicine 2,6-Di-tert-butyl-p-benzoquinone TETRAPHENYLCYCLOPENTADIENONE
4-METHYL-3-PENTEN-2-ONE 4-METHYL-3-PENTENE-2-ONE AKOS BBS-00004339 141-79-7 Building Blocks Carbonyl Compounds C3 to C6 2-METHYL-2-PENTEN-4-ONE METHYL ISOBUTENYL KETONE MESITYL OXIDE FEMA 3368 ISOPROPYLIDENEACETONE Ketones Organic Building Blocks (CH3)2C=CHC(=O)CH3 1-Methylpent-2-en-4-one 2,2-dimethylvinylmethylketone 2-Methyl-2-pentenone-4 2-Methyl-4-oxo-2-pentene 3-Isohexen-2-one 3-Penten-2-one,4-methyl- 4-methyl-3-butene-2-one 4-Methyl-3-penten-2-on 4-methyl-3-penten-2-on(dutch,german) 4-methyl-3-penten-2-one (mesityl oxide) 4-Methylpent-3-en-2-one 4-Metil-3-penten-2-one Acetone, isopropylidene- femanumber3368 Isobutenyl methyl ketone isobutenylmethylketone isopropylidene-aceton Isopropylidineacetone mesityl Mesityloxid mesityloxide(mo) Mesityloxyde Methyl 2,2-dimethylvinyl ketone Methyl 2-methyl-1-propenyl ketone methyl2,2-dimethylvinylketone methyl2-methyl-1-propenylketone Ossido di mesitile ossidodimesitile Oxyde de mesityle oxydedemesityle oxydedemesityle(french) Mesityl oxide, mixture of alpha- and beta-isomers mesityl oxnide MESITYL OXIDE, TECH., 90% MESITYL OXIDE MIXTURE OF ALPHA AND BETA& 4-METHYL-3-PENTEN-2-ONE 90+% MesitylOxide91% MesitylOxide~80% isopropylidenacetone 141797 Mesityl oxide, 90+%, remainder 4-methyl-4-penten-2-one 4-Methyl-3-penten-2-one (contains 4-Methyl-4-penten-2-one) Isopiopylideneacetone
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