Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Trimethyl borate ≥99.99% (metals basis)

Supplier: Alfa Aesar

Formula: C₃H₉BO₃
MW: 103,91 g/mol
Boiling Pt: 67-69 °C
Melting Pt: -34 °C
Density: 0,915
Flash Pt: -8 °C (17 °F)
Storage Temperature: Ambient
MDL Number: MFCD00008346
CAS Number: 121-43-7
EINECS: 204-468-9
UN: 2416
Merck Index: 12,09842



Expand All / Collapse All
Pack type Pk VWR Catalog Number Quantity
Glass bottle for solids 25 g ALFA43765.14
Supplier Article Number:: 43765.14
Glass bottle for solids 500 g ALFA43765.36
Supplier Article Number:: 43765.36
Glass bottle for solids 100 g ALFA43765.22
Supplier Article Number:: 43765.22
Expand All / Collapse All


Density 0.915
Melting point -34°
Formula weight 103.92
CAS No. 121-43-7
Purity 99.99%
Flash point -8°(17°F)
Physical form Liquid
Molecular formula (CH3O)3B
MDL No. MFCD00008346
UN No. 2416
Merck reference 14,9712
Enter Details

Select the article for which you are looking for Certificate

Indicate the Lot Number. This field is mandatory.

Enter Certificate Details

Enter the Lot number:

Choose from recent batch/lot numbers:

Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty

A new look and a renewed commitment

Built on the features & resources you know, optimized with innovation from Avantor®. Our new brand symbolizes agility and our ability to adapt to customer needs.

Learn More Start Shopping