1,1,1-trimethylol propane
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | 1,1,1-trimethylol propane | ||||||||||||||||||
other names | |||||||||||||||||||
Molecular formula | C 6 H 14 O 3 | ||||||||||||||||||
Brief description |
white, flammable solid with a faint odor |
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External identifiers / databases | |||||||||||||||||||
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properties | |||||||||||||||||||
Molar mass | 134.18 g mol −1 | ||||||||||||||||||
Physical state |
firmly |
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density |
1.08 g cm −3 |
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Melting point |
60 ° C |
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boiling point |
295 ° C |
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Vapor pressure |
<0.1 Pa (20 ° C) |
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solubility |
easily soluble in water |
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safety instructions | |||||||||||||||||||
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Toxicological data | |||||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
1,1,1-Trimethylolpropane is an organic compound from the group of alcohols , which is in the form of a white, flammable powder.
Extraction and presentation
1,1,1-Trimethylolpropane is obtained from formaldehyde with n- butyraldehyde in the presence of sodium hydroxide, two moles of formaldehyde initially reacting in an aldol reaction with butyraldehyde to form 2,2-bis-hydroxymethylbutanal; a Cannizzaro reaction then takes place with a further mole of formaldehyde, the aldehyde group being reduced to the alcohol .
properties
1,1,1-Trimethylolpropane has three hydroxyl groups and thus enables polymers to be crosslinked three-dimensionally. The flash point is 179 ° C, the ignition temperature 375 ° C.
use
1,1,1-Trimethylolpropane is used as an intermediate in the synthesis of other organic compounds (for example trimethylolpropane trimethacrylate (TMPTMA), for polyurethanes , polyester polyols and polyether polyols , binders and adhesives, synthetic lubricants, polyester and alkyd resin coatings ). These are used in the furniture, construction and automotive industries.
Web links
- OECD : Screening Information Dataset (SIDS) Initial Assessment Report (SIAR) for 1,3-propanediol, 2-ethyl-2- (hydroxymethyl) -
Individual evidence
- ↑ Entry on TRIMETHYLOLPROPANE in the CosIng database of the EU Commission, accessed on April 16, 2020.
- ↑ a b c d e f g h i j k Entry on 1,1,1-trimethylolpropane in the GESTIS substance database of the IFA , accessed on December 19, 2019(JavaScript required) .
- ↑ Nachrichten aus der Chemie , 03/2011, p. 219 doi : 10.1002 / nadc.201179640 .