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Flash point

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Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
September 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to international guidelines but not under GLP and with some lack of details (no report number, criteria of validity not indicated).
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
not specified
Qualifier:
according to
Guideline:
ISO No., other: ASTM D 3828-97
Deviations:
not specified
GLP compliance:
no
Type of method:
equilibrium method closed cup
Key result
Flash point:
31 °C
Atm. press.:
ca. 1 atm

The measured values for the reference substances were:

Flash point of butanol: 36.0°C and 36.0°C

Flash point of N,N dimethylformamide: 58.1°C and 59.0°C

Flash point of Setaflash Certified Material 99878 -3: 74.3°C and 75.0°C

The measured values for the test item were : 31.2 °C and 32.0 °C.

According to the Standard Test Method ASTM D 3828 -97 the precision of the method is for a flash point of 149°C as follow:

Repeatability: 2.0°C

Reproductibility: 7.5°C

Interpretation of results:
Category 3 (flammable liquids) based on GHS criteria
Conclusions:
The flash point of substance alpha-pinene multiconstituent is 31°C.
Therefore, the substance is classified as flammable category 3 (H226) according to Regulation (EC) n°1272/2008 (CLP) and as flammable (R10) according to Directive 67/548/EEC (DSD).
Executive summary:

The flash point was determined with a closed cup tester by an equilibrium method "Small Scale", commonly known as Setaflash where the vapours are deemed to be in temperature equilibrium with the liquid. The study was based on the procedures indicated by the following internationally accepted methods:

- ASTM D 3828 -97: Standard Test Methods for Flash Point by Small Scale Closed Tester.

- EU method Part A, A.9

Two measurements were performed.

The flash point of substance alpha-pinene multiconstituent has been measured as 31°C.

Therefore, alpha-pinene multiconstituent is classified as flammable category 3 (H226) according to Regulation (EC) n°1272/2008 (CLP) and as flammable (R10) according to Directive 67/548/EEC (DSD).

Endpoint:
flash point of flammable liquids
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Justification for type of information:
α-Pinene is a bicyclic monounsaturated monoterpene and (-)-α-pinene is an enantiomeric form of α-pinene. Therefore, data on (-)-alpha pinene can be extrapolated to alpha-pinene. (see read-across justification document in section 13).
Reason / purpose:
read-across source
Flash point:
31.3 °C
Atm. press.:
ca. 1 atm

Available Data for Reference Items:

Flash point of butanol (CAS No. 35296 -72 -1) : 35°C, closed cup (Sigma Aldrich Safety Datat Sheet)

Flash point of N,N Dimethylformamide (CAS No.68 -12 -2) : 58°C, closed cup (Acros Safety Datat Sheet)

Flash point of Setaflash Certified Material 99878 -3 : 74.5°C (Certificate of Measurement provided)

 

Measured flash point of the test item and reference items (°C):

 Substance or mixture   Assay No.1  Assay No.2
  (-)-ALPHA PINENE  31.3 31.3 
 butanol (CAS No.35296 -72 -1) 35.8  35.4
 N,N Dimethylformamide (CAS No.68 -12 -2)  57.7  57.5
 Setaflash Certified Material 99878 -3, batch 161506E  74.3  75.0

According to the results obtained with the reference items, the test has to be considered as valid.

Interpretation of results:
Category 3 (flammable liquids) based on GHS criteria
Conclusions:
The flash point of (-)-alpha-pinene was determined to be 31.3°C.
Therefore, the substance is classified as flammable category 3 (H226) according to Regulation (EC) n°1272/2008 (CLP) and as flammable (R10) according to Directive 67/548/EEC (DSD).
Executive summary:

The flash point was determined with a closed cup tester by an equilibrium method "Small Scale", commonly known as Setaflash where the vapours are deemed to be in temperature equilibrium with the liquid. The study was based on the procedures indicated by the following internationally accepted methods:

- ASTM D 3828 -97: Standard Test Methods for Flash Point by Small Scale Closed Tester.

- EU method Part A, A.9

Two measurements were performed.

The flash point of the substance (-)-alpha-pinene was determined to be 31.3°C.

Therefore, the substance is classified as flammable category 3 (H226) according to Regulation (EC) n°1272/2008 (CLP) and as flammable (R10) according to Directive 67/548/EEC (DSD).

Description of key information

Flash point of alpha-pinene multiconstituent: 31°C

Key value for chemical safety assessment

Flash point at 101 325 Pa:
31 °C

Additional information

The flash point of alpha-pinene multiconstituent was determined in a study performed according to ASTM D 3828-97 method and EU method A.9.

The value was considered with a reliability of 2 (reliable with restrictions) because the result is scientifically acceptable but not obtained under GLP and some details were lacking in the report. However the measured flash point is valid for key value and supported by consistent experimental data obtained with (-)-alpha-pinene.