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Frequently Asked Questions (Product)

Can I access Green Pocketbook on my tablet or smart phone? How?

Yes, you can use Green Pocketbook on most web-enabled devices through popular web-browser like Chrome, Internet Explorer, Firefox, Safari, etc. Depending on the size of the device, your screen view parts could be pushed down to accommodate the  device size. We do recommend that the size of device screen should be > 8″ in order to enjoy optimum viewing experience. No matter which device, you can invoke the application same way by using the URL:

I see 2 tabs on the top: ‘Chemical Search’, and ‘Citation Search’. Are they separate products?

No these are 2 components of the same application and are inter-related.

Using ‘Chemical Search’ tab, you can search for a chemical, view its physical and toxicological properties, evaluate the green scores based on these properties. You can compare up to 5 chemicals side-by-side. Then by clicking on the “Related Information” under physical properties, you can access the related citations and reactions shown under the ‘Citation Search’ tab.

You can also start your search by using the ‘Citation Search’ tab directly, identify the citation of interest and then choose to examine the properties of chemicals referred by the citation. The product allows you to toggle between these two types of searches so you can find the information you are looking for quickly.

How many physical properties are available?

We have more than 18 physical properties available. You can configure to see certian properties and choose to hide the properties you do not care about.

How are physical properties obtained or estimated?

Most of the physical properties are experimental, except ‘Water Solubility’ values. Data was collected and curated from number of public and academic sources, and we are continuing our efforts to enrich our database further. Some of the sources are: U.S. EPA, PubChem, TOXNET, OSHA, European Bioinformatics Institute, European Chemicals Agency, etc.

How do I find out if a chemical is listed under any US or international regulatory list? Does Green Pocketbook identify regulatory concerns?


How many toxicological properties are available?

We have more than 22 toxicological properties available to view. You can configure to see certian properties and choose to hide the properties you do not care about.

How are the toxicological properties obtained or estimated? What is the percentage of estimated vs expertimental values?

Although we have comprehensive experimental values for some of the toxicological properties, it does not yet cover most chemicals yet. For consistency purposes, and in order to be able to compare these values among chemicals in standard manner, we are showing estimated values by default. We are in the process of compiling and qualifying the experimental values received from various non-profit and for-profit organizations and expect to have an additional tab within Green Pocketbook that will show experimental values. At that point, you will also be able to select the species for which you would like to see the values.

For estimated toxicological values, what estimation methods are used? How do we find out which estimation method was used for a specific property?


What are the units for all the values?

Units of all the properties are described in the tool-tips related to those properties. To see the tool-tips, simply hover your mouse over the field name or values.

How are the combined scores defined?

First level combined scored were estimated using geometric mean of the individual scores; while the higher level combined scores were estimated using linear average (per United Nations GHS Guidelines)

What species are the LC50 and LD50 values based on?

For aquatic LC50 values, fish was the preferred subject, for soil Earthworm was chosen. For LD50 values, rat was chosen as the preferred species; while for DermalLD50, rabbit was used the preferred species

What do the points and areas in the endpoint-graph and score-graph indicate?

The points in the score graph show the relative score among different chemicals; while the areas show the score coverage of a chemical among all the end-points. This allows 2 views for comparisons among chemicals. The score-compare view also shows a much simplified comparison among chemicals

What percentage of the data is experimental vs. estimated?

At this point, 80% of our toxicological data is estimated using the industry standard tools like EPIsuite. As we move forward, our goal is to add more experimental data gathered from various academic and private sources around the world

What strategies were used to define individual scores?

Individual scores are measured between 0 to 4. The algorithms were defined using well recognized guidelines. Some of the guidelines we used are:

NSF/GCI 355 standard, United Nations GHS Guidelines, EPA Guide for toxic measurements, PBT Profiler Guide, Solvent Selection Guide by GlaxoSmithKline, etc.

Our strategies were also influenced by the discussions with and help from industry leaders like Dr. David constable, Director of ACS Green Chemistry Institute

Do you offer any customization so that we can use this tool to view our company  proprietary data?

How do you ensure the privacy and security of company proprietary data in this case?

We have company-proprietary toxicological data that we like to use. But it will be nice to see an integrated view of our data and what you offer.

Yes, we offer services to integrate your data within your firewall. In fact, in addition to guaranteeing the privacy of your proprietary data, we also offer auditing capability to ensure your proprietary data never leaves your firewall.


Why should we use this product when we can get chemical information from MSDS and other sources?

As you may have noticed, Pocketbook covers lot more physical properties and toxicological properties than any other single source. We have more than 18 physical properties and over 40 toxicological property, all shown within one screen. You just have to tab through the table views to see the full information. We also offer comparison among up to 5 chemicals that none of the other sources offer. In order to see the type of information provided by ViridisChem Pocketbook, you will need to refer to MSDS, PubChem, ChemSpider, etc. and will still miss some of the information.

For some of the chemicals, not all data is shown. Why?

Some of the data is only relevant to certain chemicals and does not apply to other types of chemicals. Also, values like IDLH, STEL, TWA have been published by government agencies only for certain chemicals of concern. As more data becomes available, we will continue to update our database. Since we practice continuous development methodologies and offer the Pocketbook on subscription basis, once you purchase the license, any updates we make to the databases or our product will be available to you immediately without any extra cost.

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