Ignitable Liquids Database  
Substrate Database




 

Classification Criteria and Definitions

 

Classification Criteria


The intent of the ILRC database with its associated liquid repository is to provide a FREE searchable resource that allows a laboratory to isolate an ignitable liquid of interest for inclusion into an in-house reference collection. Commercial products are obtained from manufacturers and distributors then repackaged for distribution using the product name. The database is designed for screening purposes only; it does not replace ASTM requirements for an in-house reference collection. Classification of the ignitable liquids within the database parallels the ASTM E1618-06 and is a consensus from a committee of practicing fire debris analysts.

 
Predominant profile:
The predominant profile identity is based upon the bulk of the pattern not necessarily on the numerical value of the ion chromatograms.
Hydrocarbon range:
The hydrocarbon range is based on the predominant liquid pattern.
Dearomatized:
Samples formerly classified as "dearomatized" have been reclassified with the term "dearomatized" included in the supplemental information that can be used in the keyword search.
Blend:
Blends are classified as miscellaneous.
• Aliphatics are less abundant than aromatics.
• Blends with a heavy component that likely won't be seen in debris without a solvent extraction will be classified as both miscellaneous and by the pattern minus the heavy portion. 
• 1,2,4-trimethylbenzene is equal to or greater than 90% of the adjacent n-alkane peak. The 5 peak group (n-propylbenzene to 1,2,4-trimethylbenzene) of the aromatic pattern is enhanced compared to the remainder of the aromatic pattern.
Oxygenated Solvents:
Contains 5% or more of an oxygenated compound as measured by integrating the total ion chromatogram.
Insecticides:
Insecticides are classified based on the solvent vehicle in the product.

 

 

Definitions

SRN: The Sample Reference Number identifies each entry.
Brand Name: The brand and product name assigned by the distributor.
Hydrocarbon Range: The peaks on the TIC lie within this range on the hydrocarbon (alkane) ruler.
Predominant Ion Profile: The predominant type of extracted ion profile.
Major Peaks: Some of the major peaks in each sample have been identified.
Classification: This is the ILRC classification. 
Product Use: This is the intended use for which the product is marketed.
Condition: The condition of the sample, either unweathered or % weathered.
Date of Run: The date the sample was analyzed.
Sample Availability (Y/N): Indicates if a physical sample of the liquid is available from the NCFS repository.
Supplemental Information: Any additional information available regarding the sample.
Dataset: This is the Agilent dataset created when the sample was analyzed, consisting of the data.ms and pre_post.ini files in a self-extracting Zip file. Executing the file will extract the dataset to a folder on the client system. The default path is: c:\windows\desktop\ilrc\nnnnnnnn.d where nnnnnnnn is the SRN.
Spreadsheet: The TICs and Ion Profiles for each entry are provided in a MS Excel spreadsheet. The spreadsheet is useful to display details of peaks by expanding the horizontal scale of the TIC. The spreadsheet also provides a printer friendly method of printing the TIC(s).
MSDS: The Material Safety Data Sheet is also provided, when available.

 

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