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Physical & Chemical properties

Auto flammability

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Administrative data

Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, guideline study, available as unpublished report, no restrictions, fully adequate for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
yes (incl. QA statement)
Remarks:
Chilworth Technology Limited, Process Safety Laboratories, Phi House, Southampton Science Park, Southampton SO16 7NS, United Kingdom

Test material

Constituent 1
Chemical structure
Reference substance name:
1,4-Dimethyl-1H-pyrazole
EC Number:
600-813-6
Cas Number:
1072-68-0
Molecular formula:
C5H8N2
IUPAC Name:
1,4-Dimethyl-1H-pyrazole
Details on test material:
- Name of test material (as cited in study report): 1,4-dimethyl-pyrazole
- Physical state: Clear colourless liquid
- Analytical purity: Approx 99.8 %
- Lot/batch No.: 34040268E0
- Expiry date: 15 July 2016

Results and discussion

Auto-ignition temperature (liquids / gases)
Auto-ignition temperature:
401 °C
Atm. press.:
1 023 hPa
Remarks on result:
other:

Any other information on results incl. tables

Hot flame autoignition temperature (°C): 401

Including correction factor for barometric pressure (°C): 401

Time lag to autoignition (s): 32

Barometric pressure (kPa): 102.3

Sample quantity (µL): 200

No cool flames were observed. An orange flame was observed at the autoignition temperature.

Atm. Press (kPa)

Inner Flask Temp. (°C)

Conc. (µL)

Clean flask? Yes / No

Ignition? Yes / No

Time lag (s)

Comments

102.3

500

100

Y

Y

7

Large flame

102.3

410

100

Y

Y

38

Large flame

102.3

395

100

Y

N

-

-

102.3

404

100

Y

Y

43

Large flame

102.3

401

100

Y

N

-

-

102.3

401

200

Y

Y

32

Large flame

102.3

398

200

Y

N

-

-

102.3

398

300

Y

N

-

-

104.0

398

250

Y

N

-

-

104.0

398

400

Y

N

-

-

104.0

398

150

Y

N

-

-

104.0

398

100

Y

N

-

-

 

Applicant's summary and conclusion

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