Propylidintrimethanol

Bezeichnung:Propylidintrimethanol

CAS-Nr77-99-6

Englisch Name:Trimethylolpropane

CBNumberCB3725999

SummenformelC6H14O3

Molgewicht134.17

MOL-Datei77-99-6.mol

Synonyma

Propylidintrimethanol

Tris(hydroxymethyl)propan

2-Ethyl-2-(hydroxymethyl)-1,3-propandiol

Propylidintrimethanol physikalisch-chemischer Eigenschaften

Schmelzpunkt	56-58 °C(lit.)
Siedepunkt	159-161 °C2 mm Hg(lit.)
Dichte	1.176
Dampfdichte	4.8 (vs air)
Dampfdruck	<1 mm Hg ( 20 °C)
Brechungsindex	1.4850 (estimate)
Flammpunkt	172 °C
storage temp.	Store below +30°C.
Löslichkeit	H₂O: 0.1 g/mL, clear
pka	14.01±0.10(Predicted)
Aggregatzustand	Flakes
Farbe	White
PH	6.5 (100g/l, H2O, 20℃)(External MSDS)
Explosionsgrenze	2-11.8%(V)
Wasserlöslichkeit	soluble
BRN	1698309
InChIKey	ZJCCRDAZUWHFQH-UHFFFAOYSA-N
LogP	-0.975 (est)
CAS Datenbank	77-99-6(CAS DataBase Reference)
NIST chemische Informationen	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-(77-99-6)
EPA chemische Informationen	Trimethylolpropane (77-99-6)

Sicherheit

S-Sätze:	22-24/25
WGK Germany	1
RTECS-Nr.	TY6470000
Selbstentzündungstemperatur	375 °C DIN 51794
TSCA	Yes
HS Code	29054100
Giftige Stoffe Daten	77-99-6(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: > 2500 mg/kg

Gefahreninformationscode (GHS)

Trimethylolpropane Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE BIS WEISSE HYGROSKOPISCHE KRISTALLE ODER PELLETS.
CHEMISCHE GEFAHREN
Reagiert sehr heftig mit starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
INHALATIONSGEFAHREN
Eine belästigende Partikelkonzentration in der Luft kann beim Dispergieren schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Reizt die Augen und die Atemwege möglicherweise mechanisch.
LECKAGE
Persönliche Schutzausrüstung: Atemschutzgerät, P1-Filter für inerte Partikel. Verschüttetes Material in Behältern sammeln. Reste mit viel Wasser wegspülen.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Trimethylolpropane is a Colorless, hygroscopic crystals. Soluble in water and alcohol. Combustible.The three primary hydroxyl groups undergo the normal OH group reactions.
Verwenden
Trimethylolpropane acts as a precursor to alkyd resins, high-gloss coatings and ion exchange resins. It is also employed as a multifunctional monomer utilized for the production of coatings, ethoxylated and propoxylated trimethylolpropane derivatives. Further, it serves as a building block in the polymer industry.
Application
Trimethylolpropane is used in saturated polyesters for coil coatings, alkyds for paints, polyurethanes for coatings and elastomers, acrylic acid esters for radiation curing, esters for synthetic lubricants, rosin esters and for surface treatment of pigments.
Large quantities of trimethylolpropane and its ethoxylated derivatives are used as precursors for urethanes and polyester resins. Another important field of application is in medium-oil and short-oil alkyd resins (→ Alkyd Resins). The resulting lacquers are characterized by excellent resistance to alkali, detergents, and water, combined with outstanding impact resistance and flexibility, as well as excellent clearness and clearness retention.
Definition
ChEBI: Trimethylolpropane is a primary alcohol. It is used as a precursor for the manufacture of resins including alkyds, saturated polyesters and polyurethanes (polyester polyol and polycarbonate diol).
Synthese
Trimethylolpropane is made by the base-catalyzed aldol addition of butyraldehyde with formaldehyde followed by Cannizzaro reaction of the intermediate 2,2-bis(hydroxymethyl) butanal with additional formaldehyde and at least a stoichiometric quantity of base.
läuterung methode
Various procedures have been suggested for separating the trimethylolpropane from the formate. For instance, the concentrated reaction solution can be extracted with an organic solvent, which is then evaporated and the crude trimethylolpropane is purifified by vacuum distillation. In another variant, the aqueous reaction solution is evaporated until most of the sodium formate crystallizes and is removed by hot fifiltration. The application of electrodialysis has also been suggested. The liquid trimethylolpropane which remains is liberated of residual salts with an ion exchanger and then distilled. The removal of discoloring impurities is described in. Cyclic diethers of the acetal type (1,3-dioxanes, formals) can be converted into TMP and methanol by metal-catalyzed hydrogenation. Removal of high boiling acetals by acid treatment has been described.
läuterung methode
Crystallise it from acetone and ether and it distils at high vacuum. [Beilstein 1 III 2349.]

Trimethylolpropane Upstream-Materialien And Downstream Produkte

Propylidintrimethanol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

77-99-6, Trimethylolpropane Verwandte Suche:

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