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205273

Sigma-Aldrich

Isopropóxido de titanio (IV)

97%

Sinónimos:

TTIP, Ortotitanato de tetraisopropilo

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About This Item

Fórmula lineal:
Ti[OCH(CH3)2]4
Número de CAS:
546-68-9
Peso molecular:
284.22
Beilstein/REAXYS Number:
3679474
EC Number:
208-909-6
MDL number:
MFCD00008871
UNSPSC Code:
12352106
PubChem Substance ID:
24852318
NACRES:
NA.22
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Quality Level

200

assay

97%

form

liquid

reaction suitability

core: titanium
reagent type: catalyst

refractive index

n20/D 1.464 (lit.)

bp

232 °C (lit.)

mp

14-17 °C (lit.)

density

0.96 g/mL at 20 °C (lit.)

SMILES string

CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C

InChI

1S/4C3H7O.Ti/c4*1-3(2)4;/h4*3H,1-2H3;/q4*-1;+4

InChI key

VXUYXOFXAQZZMF-UHFFFAOYSA-N

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General description

El isopropóxido de titanio (IV) es un compuesto de coordinación a base de titanio, normalmente utilizado en la reacción de epoxidación de Sharpless asimétrica de los alcoholes alílicos. Se utiliza también como catalizador en la reacción de Kulinkovich para la síntesis de ciclopropanos.[1][2][3]

Application

Los nuevos híbridos óxido/fosfonato metálicos se formaron a partir del isopropóxido de titanio (IV) en un proceso sol-gel de dos etapas. Materia prima para películas finas de bario-estroncio-titanato. Utilizados para la fabricación de titanosilicatos porosos, potenciales materiales de intercambio iónico para la limpieza de los residuos radiactivos. Se aplican en la formación de una heterosúpermolecula consistente en un complejo aceptor de electrones TiO2 nanocristalita-viológeno cuya transferencia de electrones inducida por la luz se ha demostrado.
Utilizado normalmente como precursor para la preparación de titanio (TiO2)[4][5]

Packaging

La botella Sure/Real™ de 25 ml se recomienda como una botella de un solo uso. Los pinchazos repetidos provocarán probablemente una disminución del rendimiento del producto.

Legal Information

Producto de Dorf Ketal
Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - STOT SE 3

target_organs

Central nervous system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

105.8 °F - Pensky-Martens closed cup

flash_point_c

41 °C - Pensky-Martens closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificados de análisis (COA)

Lot/Batch Number
STBL3921
SDBB1181
SDBB1179
SHBQ9968
STBK7606

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Asymmetric epoxidation of allylic alcohols: the Katsuki-Sharpless epoxidation reaction
Katsuki T and Martin V
Organic Reactions, 48(3), 1-299 (2004)
Al-Jufairi, N.
Materials Science Forum, 517, 165-172 (2006)
Ethers, Epoxides, and Sulfides
Organic Chemistry (2008)
Titanium (IV) isopropoxide-catalyzed formation of 1-substituted cyclopropanols in the reaction of ethylmagnesium bromide with methyl alkanecarboxylates
Kulinkovich OG, et al.
Synthesis, 3, 234-234 (1991)
J A Darr et al.
IEE proceedings. Nanobiotechnology, 152(3), 109-111 (2006-01-31)
Surfactant-coated amorphous titania nanospheres have been synthesised using templating 'water-in-supercritical carbon dioxide' emulsion droplets; the process represents a clean and controlled method for the manufacture of high-purity nanoparticles.
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Questions

1–9 of 9 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. Buongiorno, utilizziamo questo reagente per determinare la presenza di acqua nei solventi acquistati. Sapreste dirmi qual è la quantità minima di acqua che è possibile rilevare?

    1 answer

    1. While this material will react with water to form TiO2, the product is not specifically tested or used as a water scavenger. Unfortunately, there is no internal method or information available regarding this reaction. A brief search of the literature did not reveal any additional information.

      Helpful?

  4. What is the equivalent weight of ttip

    1 answer

    1. The equivalent weight of this product can be calculated by dividing the molecular weight by the net positive valence. It has 284.22 grams of Titanium(IV) isopropoxide per mole of titanium, and 71.055 grams of Titanium(IV) isopropoxide per mole of isopropoxide. The equivalent weight would depend on the source. That is, if you are looking at the material as a source of Titanium(IV), you would use 284.22 grams. But if they are looking at it as a source of the strong base (isopropoxide ion), you would use 71.055 grams. When looking at the Titanium(IV) isopropoxide per mole of titanium, there are +4 positively charged valence electrons which resulted 71.055 for the equivalent weight.

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  5. What is the difference between this and 87560 ttip?

    1 answer

    1. Products 205273 and 87560 have the same Chemical Abstract Service (CAS) number
      546-68-9, which means chemically they are the same substance. The difference between the two products are the product specifications. The product specification sheets for each product are linked below to facilitate a comparison for the specific application needs.

      https://www.sigmaaldrich.com/specification-sheet/ALDRICH/87560
      https://www.sigmaaldrich.com/specification-sheets/355/956/205273-BULK.pdf

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  6. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  7. What is the viscosity of Product 205273, Titanium (IV) Isopropoxide?

    1 answer

    1. The viscosity of titanium (IV) isopropoxide is 4.5 centipoise at 25 deg C.

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  8. What needs to be done if Product 205273, Titanium (IV) Isopropoxide is a solid instead of a liquid?

    1 answer

    1. The material will melt/freeze at 18-20 deg C, therefore the material can freeze when shipped during the winter months.  It can be warmed in a water bath to about 30 deg C to change the state without harming the chemical.

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  9. What is Product 205273, Titanium (IV) Isopropoxide soluble in?

    1 answer

    1. This chemical is very soluble in ethanol, carbon tetrachloride, hexane, benzene, or isopropanol.  Water is not recommended as a solvent because titanium (IV) isopropoxide will hydrolyze. (Precautions should be taken to make sure the solvents used do not contain any water - anhydrous grades would be recommended).

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