Tributyl borate Property

Melting point:

-70 °C (lit.)

Boiling point:

114-115 °C/12 mmHg (lit.) 230-235 °C (lit.)

Density 

0.853 g/mL at 25 °C (lit.)

vapor density 

7.95 (vs air)

vapor pressure 

3.79hPa at 25℃

refractive index 

n20/D 1.409(lit.)

Flash point:

200 °F

storage temp. 

Inert atmosphere,Room Temperature

solubility 

soluble in Methanol,Benzene,Ethanol

form 

Liquid

Specific Gravity

0.853

color 

Clear colorless

Water Solubility 

decomposes

Sensitive 

Moisture Sensitive

Hydrolytic Sensitivity

7: reacts slowly with moisture/water

BRN 

1703865

Stability:

Stables, but reacts rapidly with moisture, water. Reacts vigorously with oxidizing agents. Incompatible with strong acids.

InChIKey

LGQXXHMEBUOXRP-UHFFFAOYSA-N

LogP

1 at 25℃

CAS DataBase Reference

688-74-4(CAS DataBase Reference)

NIST Chemistry Reference

Boric acid, tributyl ester(688-74-4)

EPA Substance Registry System

Tributyl borate (688-74-4)

Safety

Hazard Codes 

Xn,Xi

Risk Statements 

22-36/37/38-36/38

Safety Statements 

26-36/37/39-37/39

RIDADR 

3272

WGK Germany 

3

RTECS 

ED4900000

F 

21

TSCA 

Yes

HazardClass 

3

PackingGroup 

III

HS Code 

29209090

Hazardous Substances Data

688-74-4(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Tributyl borate Chemical Properties,Usage,Production

Chemical Properties

Water-white liquid. Distillation range, 85% distills between 135C and 140C (40 mm Hg). Hydrolyzes rapidly; miscible with common organic liquids. Combustible.

Uses

Welding fluxes, intermediate in preparation of borohydrides, flame retardant for textiles (with boric acid).

Uses

Tri-n-butyl Borate is used as a catalyst in the formation of dihydropyrimidinones under solvent-free microwave-assisted conditions.

Air & Water Reactions

Rapidly decomposes in water.

Reactivity Profile

Borates behave similarly to esters in that they react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters/borates with alkali metals and hydrides. Reacts vigorously with oxidizing materials. .

Health Hazard

ACUTE/CHRONIC HAZARDS: Toxic; may emit toxic fumes when heated to decomposition or on contact with acid or acid fumes, local irritant.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. An eye irritant. Flammable when exposed to heat, flame, or oxiduers. To fight fire, use foam, CO2, dry chemical. When heated to decomposition or on contact with acid or acid fumes it can emit toxic fumes; on contact with oxidizing materials it can react vigorously. See also BORANES and BORON COMPOUNDS.

Purification Methods

The chief impurities are n-butyl alcohol and boric acid (from hydrolysis). It must be handled in a dry-box and can readily be purified by fractional distillation, under reduced pressure. [O’Brien Aust J Chem 10 91 1957, Gerrard & Lappert J Chem Soc 2545, 2547 1951, Beilstein 1 IV 1544.]