3-METHYLHEPTANE Property

Melting point:

-121--120°C

Boiling point:

118 °C(lit.)

Density 

0.705 g/mL at 25 °C(lit.)

vapor pressure 

0.73 psi ( 37.7 °C)

refractive index 

n20/D 1.398(lit.)

Flash point:

45 °F

form 

clear liquid

color 

Colorless to Almost colorless

Odor Threshold

0.027ppm

Water Solubility 

792 μg/kg at 25 °C (shake flask-GLC, Price, 1976)

BRN 

1730777

Henry's Law Constant

3.70 atm?m³/molat 25 °C (approximate - calculated from water solubility and vapor pressure)

Exposure limits

ACGIH: TWA 300 ppm

LogP

4.627 (est)

CAS DataBase Reference

589-81-1(CAS DataBase Reference)

EPA Substance Registry System

3-Methylheptane (589-81-1)

Safety

Hazard Codes 

F,Xn,N,Xi

Risk Statements 

11-38-50/53-65-67

Safety Statements 

9-16-29-33-60-61-62

RIDADR 

UN 1262 3/PG 2

WGK Germany 

3

Hazard Note 

Irritant/Highly Flammable

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

2901100000

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H336May cause drowsiness or dizziness

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P273Avoid release to the environment.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P331Do NOT induce vomiting.

3-METHYLHEPTANE Chemical Properties,Usage,Production

Chemical Properties

Colorless liquid.

Physical properties

Colorless, flammable liquid with an odor resembling hexane. An odor threshold concentration of 1.5 ppm_v was reported by Nagata and Takeuchi (1990).

Uses

Calibration, organic synthesis.

Definition

ChEBI: 3-Methylheptane is an alkane.

Hazard

Flammable, dangerous fire risk.

Environmental Fate

Photolytic. Based on a photooxidation rate constant of 8.90 x 10^-12 cm³/molecule?sec for the reaction of 3-methylheptane and OH radicals, the estimated lifetime is 16 h during summer sunlight (Altshuller, 1991).
Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor. 3- Methylheptane will not hydrolyze because it does not contain a hydrolyzable functional group.

Solubility in organics

In methanol, g/L: 154 at 5 °C, 170 at 10 °C, 190 at 15 °C, 212 at 20 °C, 242 at 25 °C, 274 at 30 °C, 314 at 35 °C, 365 at 40 °C (Kiser et al., 1961); miscible in many liquid hydrocarbons, particularly saturated hydrocarbons.