Is there a comprehensive chemical odor threshold database?

[n8cole]

I work in air pollution control and am occasionally responsible for designing equipment to neutralize odors. While I can often find the odor threshold of a target chemical using resources like CAMEO or various chemical databases, I’m looking for a more comprehensive and dedicated database that specifically focuses on odor-related properties.

Cameo - https://cameochemicals.noaa.gov/chemical/8823

 

[shvet]

odor-related properties.

can you describe what you mean?

a good source for odor threshold is PubChem, e.g.

Hydrogen Sulfide

Hydrogen Sulfide | H2S | CID 402 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

pubchem.ncbi.nlm.nih.gov

 

[n8cole]

Specifically, I am looking for a database of the chemicals odor threshold - at what concentration is the chemical olfactorily undetectable.

PubChem is good, and so is Cameo if the USCG CHRIS Code is published. But I am hoping for the existence of a much larger database.

I understand that this is a shoot in the dark and it's unlikely that something like that exists. But this site has surprised me before.

 

[pierreick]

Hi,
Some data about acrylic esters. Those materials, in particular EA, have a strong odor at very low concentration.
Try this link:

https://aiha-assets.sfo2.digitaloceanspaces.com/AIHA/aihaconnect/Educational-Books-Preview/Odor-Thresholds-for-Chemicals-43-PREVIEW.pdf

another reference : Odor thresholds for chemicals with established occupational health standards ,# 300 chemicals
Pierre

 

[shvet]

But I am hoping for the existence of a much larger database.

The 13 references for H2S under the PubChem link is not large enough? How many do you need? If few, then what is wrong with these?

if USCG CHRIS Code is published

Note that CAS# is more popular.

For info - the ASTM data series are available

Compilation of Odor and Taste Threshold Values Data

The second edition has significantly expanded the odor threshold data and taste threshold data on the compounds listed in DS 48.Information includes type, modality, media, purity threshold values, units, molecular weight, Wiswesser Line Notation, literatu

store.astm.org

Atlas of Odor Character Profiles

Provides easy access to the odor character of 160 chemicals and mixtures; a data base for further research in the science of smell; and procedures to select and train panelists. For professionals in the field of food and beverage sciences, air and water

store.astm.org

For info - some discussions and references can be found in

https://www.atsdr.cdc.gov/substances/toxsearch.asp

IPCS INCHEM - Environmental Health Criteria Monographs

that specifically focuses on odor-related properties

Still waiting for what properties you mean.

 

[n8cole]

The 13 references for H2S under the PubChem link is not large enough? How many do you need? If few, then what is wrong with these?


Note that CAS# is more popular.

For info - the ASTM data series are available

Compilation of Odor and Taste Threshold Values Data

The second edition has significantly expanded the odor threshold data and taste threshold data on the compounds listed in DS 48.Information includes type, modality, media, purity threshold values, units, molecular weight, Wiswesser Line Notation, literatu

store.astm.org

Atlas of Odor Character Profiles

Provides easy access to the odor character of 160 chemicals and mixtures; a data base for further research in the science of smell; and procedures to select and train panelists. For professionals in the field of food and beverage sciences, air and water

store.astm.org

For info - some discussions and references can be found in

https://www.atsdr.cdc.gov/substances/toxsearch.asp

IPCS INCHEM - Environmental Health Criteria Monographs

Still waiting for what properties you mean.

Having references is important, but what I want is a large database of chemicals. For example, a while ago I need odor-threshold values for the carboxylic acid compounds that are prevalent in vegetable oil refining, palmitic acid, oleic acid, etc. But no database I looked at had these chemicals listed.

Also, the property I am most interested in is odor threshold - lowest concentration of a chemical compound in air that can be detected by the human sense of smell.

Thank you for the sources you have provided. I haven't done a deep dive into them yet, but at first glance they appear to be what I am looking for.

 

[shvet]

I need odor-threshold values for the carboxylic acid compounds that are prevalent in vegetable oil refining, palmitic acid, oleic acid, etc. But no database I looked at had these chemicals listed.

A threshold means experiments must have been conducted. An expensive and complex procedure, I should note, with few opportunities of results being used by someone in the future. How many decision-makers are there who would waste budgets and human resources on such a thing? I suppose none, given there are no strong external reasons/incentives to do so.

 

[MatthewL]

If your factory/storage site/transship location is near a residential or business area, odor thresholds and dispersion modeling is very important unless you want the neighbors shutting you down due to odor complaints. I know this from hard experience with plants that used chemicals with a ppb odor threshold.

 

[pierreick]

Hi,
For the reasons explained above by Matt, I relocated a plant from Australia (Melbourne area) To Thailand. The chemical was Ethyl acrylate.
Pierre