Pent-1-ene

Appearance / physical state / colour

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

appearance / physical state / colour

Type of information:

not specified

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Recognised data source, considered as reliable, but raw data with no details.

Qualifier:

no guideline required

Physical state at 20°C and 1013 hPa:

liquid

Form:

liquid: volatile

Substance type:

organic

Executive summary:

The CRC Handbook describes the substance as a volatile liquid or gas.

Reference 2

Endpoint:

appearance / physical state / colour

Type of information:

not specified

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

data from handbook or collection of data

Remarks:

Recognised data source, considered as reliable, but raw data with no details.

Qualifier:

no guideline required

Physical state at 20°C and 1013 hPa:

liquid

Form:

liquid

Colour:

colorless

Substance type:

organic

Color/Form:

Liquid

[Budavari, S. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 1996., p. 1225] **PEER REVIEWED**

Colorless liquid
[Lewis, R.J., Sr (Ed.). Hawley's Condensed Chemical Dictionary. 12th ed. New York, NY: Van Nostrand Rheinhold Co., 1993, p. 882] **PEER REVIEWED**

Odor:

HIGHLY DISAGREEABLE

[Sax, N.I. Dangerous Properties of Industrial Materials. 5th ed. New York: Van Nostrand Rheinhold, 1979., p. 375] **PEER REVIEWED**

Odor Threshold:

0.19 ppm.

[Clayton, G.D., F.E. Clayton (eds.) Patty's Industrial Hygiene and Toxicology. Volumes 2A, 2B, 2C, 2D, 2E, 2F: Toxicology. 4th ed. New York, NY: John Wiley & Sons Inc., 1993-1994., p. 1248] **PEER REVIEWED**

Executive summary:

The HSDB database provides, as secondary source, physico-chemical data on the substance.

The appearance, cited from various handbooks, is described as a colorless liquid, with highly disagreeable odor.

Reference 3

Endpoint:

appearance / physical state / colour

Type of information:

not specified

Adequacy of study:

supporting study

Reliability:

4 (not assignable)

Rationale for reliability incl. deficiencies:

secondary literature

Qualifier:

no guideline required

Physical state at 20°C and 1013 hPa:

liquid

Form:

liquid: volatile

Colour:

colourless

Substance type:

organic

STATE OF AGGREGATION

The substance is liquid.

PROPERTIES

colourless

CHEMICAL CHARACTERISATION

Highly volatile.

(no original reference specified)

Executive summary:

The Gestis database provides, as secondary source, physico-chemical data on the substance.

The appearance is described as a colourless, highly volatile, liquid.

Description of key information

Colourless liquid, highly volatile, with disagreeable odour.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

liquid

Additional information

Three literature references (CRC, HSDB and Gestis) were retained, with two considered as reliable sources (handbooks) and key data. They were used together to provide a more detailed description than each one individually.

Note that the substance, despite highly volatile and borderline to the gas state, fulfills the definition of a liquid, according to CLP criteria (Annex I Part 1):

"Liquid means a substance or mixture which:

(i) at 50°C has a vapour pressure of not more than 300 kPa (3 bar);

(ii) is not completely gaseous at 20°C and at a standard pressure of 101,3 kPa; and

(iii) which has a melting point or initial melting point of 20°C or less at a standard pressure of 101,3 kPa;"