TEO, TEOF 122-51-0 dehydrating agent TEO, TEOF 122-51-0
TEO, TEOF 122-51-0 dehydrating agent TEO, TEOF 122-51-0

HARTTIVE TEO (TEOF)

Common NameTEO / TEOF
Chemical NameTriethyl Orthaformate
Molecular FormulaHC(OC2H5)3
Molecular Weight148.20
UN Number:2524
CAS Number122-51-0

HARTTIVE TEO (TEOF) is an orthoester compound widely used as a pharmaceutical intermediate (API) in medical areas, such as the preparation of antimalarial drugs chloroquine and quinpir. It is also used as a raw material for photographic agents and as a reagent in the synthesis of Bodroux-Chichibabin aldehyde. In PU coating applications, HARTTIVE TEO serves as a stabilizer and exhibits excellent compatibility with isocyanates and other components.

Package

180 KG/Iron Drum.

It can be packaged on demand. Please inquire.      


Harttive TEO, Triethyl orthoformate (TEO) can be active with water and form HCOOCH2CH3 and CH3CH2OH.

Below is the chart to compare the usage of MSI and TEO.

Dehydrating

HARTTIVE MSI

HARTTIVE TEO

Classified

Monofunctional isocyanate

Ester

Description

MSI is acted with water to produce carbon dioxide. It’s used to dehydrate for solvent/pigment/filler. Generally, MSI is applied as an pre-dehydrating agent on Dual-component PU coating or applied as a stabilizer agent on Single-component PU coating to improve storage qualitative.

Triethyl orthoformate (TEO) can be acted with water and form HCOOCH2CH3 and CH3CH2OH.

Molecular weight

197

148

Addition (1g water)

10.9g*1.1= 12g

8.29g*1.1=9g

Limitation

Applied for One-component PU pre-handling hardener.  Do NOT  add in the mixture of main agent & hardener, otherwise, MSI will be reacted with the NCO of main agent.

None limitation.

Reaction speed

Fast

The reaction is faster after heating.

*There are two significant advantages of TEO in comparison of MSI. First, you can save 25% cost due to the dosage is only 9 grams (75%). Furthermore, there is no limitation on handling. It’s simple, easy and poka-yoke (mistake-proofing).


Chemical NameTriethyl Orthaformate
CAS No.122-51-0
Molecular Weight (g/mol)148.2
AppearanceClear liquid
Boiling Point (°C)approx.140
Flash Point (°C)approx. 35
Density (g/cm3 @20°C)0.9
Purity (%)98 min.
Package180 KGS/Drum
Self Life6 months since production date.

  • Dyes
  • Intermediate for Pharmaceuticals
  • Pesticides
  • Fragrance (Citric acid…etc.)
  • Coatings (e.g. Polyurethane, polyester…)
  • Sealants and sprays