1,1',1''-Nitrilotripropan-2-ol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
WEISSE HYGROSKOPISCHE KRISTALLE
PHYSIKALISCHE GEFAHREN
Staubexplosion der pulverisierten oder granulierten Substanz in Gemischen mit Luft m?glich.
CHEMISCHE GEFAHREN
Zersetzung beim Verbrennen unter Bildung von giftigen Rauchen mit Stickoxiden. Mittelstarke Base in w?ssriger L?sung. Reagiert mit starken Oxidationsmitteln und starken S?uren.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt.
MAK nicht festgelegt.
INHALATIONSGEFAHREN
Verdampfung bei 20°C vernachl?ssigbar; eine gesundheitssch?dliche Partikelkonzentration in der Luft kann jedoch beim Versprühen oder Dispergieren, vor allem als Pulver schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt stark die Augen und reizt die Haut und die Atemwege.
LECKAGE
Pers?nliche Schutzausrüstung: Atemschutzger?t, P2-Filter für sch?dliche Partikel. Zündquellen entfernen. Verschüttetes Material in Beh?ltern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgf?ltig sammeln. An sicheren Ort bringen. NICHT in die Umwelt gelangen lassen.
R-S?tze Betriebsanweisung:
R36:Reizt die Augen.
R52/53:Sch?dlich für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Beschreibung
Triisopropanolamine (TIPA), a tertiary alkanolamine, is majorly used as a grinding chemical that reduces agglomeration in the ball milling process and changes the particle distribution of the finished cement.
Chemische Eigenschaften
Triisopropanolamine is a white to slightly yellow crystalline that is almost odorless. It is fully soluble in water. It is a corrosive and hygroscopic solid.
Verwenden
Triisopropanolamine is an amine used for a variety of industrial applications including as an emulsifier, stabilizer, and chemical intermediate. It is also used to neutralize acidic components of some herbicides. It is majorly used as a grinding chemical that reduces agglomeration in the ball milling process and changes the particle distribution of the finished cement.
synthetische
The process involves preparing raw materials with a molar ratio of 1:3.00 to 3.05 using liquefied ammonia (pure ammonia) and propylene oxide. The reactor is decompressed to -0.098Mpa to remove oxygen, then deionized water is added to achieve a 28-60% concentration of ammoniacal liquor. The ammonia and propylene oxide are introduced in two batches: first, half the weight of liquefied ammonia is pumped into the still, followed by half the weight of propylene oxide at 20-50°C, maintaining an internal pressure below 0.5Mpa and a reaction temperature of 20-75°C. After adding propylene oxide, the mixture is kept for 1.0-3.0 hours. Then, under the same conditions, the second half of the liquefied ammonia and propylene oxide are added, and the reaction continues for another 1.0-3.0 hours at 20-120°C. After the reaction, the pressure in the reactor is reduced to remove moisture and low-boiling impurities, resulting in a Triisopropanolamine product with less than 5% water content.
Application
Triisopropanolamine (TIPA) can act as an interfacial transition zone (ITZ) to improve the mechanical properties of the mortar and the concrete. It can also be used to increase the compressive strength of the cement-fly ash system by accelerating the hydration of both the compounds.
1. Cement industry - TIPA is commonly used a cement grinding additives. It increases the strength of cement and other mixtures for cement.
2. Metallurgy - TIPA is used as antioxidants and coolant and prevent corrosion in metals.
3. Polyurethane industry - preliminary usage as a agent and catalyst to improve PU quality.
4. Textile industry - TIPA is used as refining agent and other dye specific agent properties.
Allgemeine Beschreibung
White solid with slight odor of ammonia. Denser than water .
Air & Water Reaktionen
Water soluble
Reaktivit?t anzeigen
Triisopropanolamine neutralizes acids to form salts plus water in exothermic reactions. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by combination with strong reducing agents, such as hydrides.
Hazard
Irritant to skin and eyes.
Health Hazard
Irritation of eyes and skin. May cause slight corneal injury or burn. Repeated contact may cause skin burn. Heated vapor may cause moderate respiratory irritation. Low to moderately toxic by oral routes.
Vorsichtsma?nahmen
Hygroscopic. Store away from oxidizing agents, water/moisture. Keep the container tightly closed and place it in a cool, dry and well ventilated condition. Store under inert gas.
Einzelnachweise
Pensri Piboonchaisit, et al. Novel Route to Tris(silatranyloxy-i-propyl)amine Directly from Silica and Triisopropanolamine, Part I.ScienceAsia.1999,25113-119.
Paul J. Sandberg.; F. Doncaster. On the mechanism of strength enhancement of cement paste and mortar with triisopropanolamine.Cem. Concr. Res.2004,34(6), 973-976.
1,1',1''-Nitrilotripropan-2-ol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte