NIST Data Gateway, Version 4.0

Introduction

The NIST Data Gateway is an online system designed to provide users with easy access to NIST scientific and technical data. The Gateway provides:

• Direct links to free NIST online systems and full text online versions of many Journal of Physical and Chemical Reference Data (JPCRD) articles.
• Links to descriptions and ordering information for PC products and JPCRD reprints available for purchase.
• Search options based on keyword, property, and substance name.
• JPCRD search menu with options based on title, author, year published, keyword, and substance name.

The scope of Version 4.0 of the Gateway is 105 NIST databases: 53 online systems with scientific and technical data as well as 48 PC products. The PC products include 26 standard reference databases and 25 imaging databases available from the NIST Scientific and Technical Databases Web site (www.nist.gov/srd). Additional NIST databases will be included in future versions of the Gateway.

Version 4.0 also provides a new search menu (accessible from the JPCRD link) for 769 articles published in the Journal of Physical and Chemical Reference Data between 1972 and 2003. Full text online versions of over 350 articles can be accessed from the NIST Data Gateway in PDF format. For the articles that are not available online, including those published within the last five years, ordering information for reprints is provided. In addition, links are available to abstracts at the American Institute of Physics Web site for all articles published between 1975 and 2003.

Finally, Version 4.0 provides, through the keyword search option, links to information on over 1100 NIST Standard Reference Materials described in the NIST Standard Reference Materials Web site (www.nist.gov/srm) and over 600 NIST Calibration Services described in the NIST Calibration Services Web site (ts.nist.gov/calibrations).

The Gateway can be searched by keyword, property, and substance name.  Over 1000 keywords and properties as well as over 140,000 substance names and synonyms are available in Version 4.0 of the Gateway.  Search results are as follows:

• Links to online systems with data matching the search specifications.
  • Click a link to connect directly with a NIST online system.  Then search for the desired data by following the search menus provided by the selected system.
• Links to Web pages of ordering information for PC products with data matching the search specifications.
  • Click a link to connect to the Web page that describes the selected product. Then press the FAX OR MAIL ORDER button or the ONLINE PURCHASE button to order the database.  A download option is available with online ordering.

Keyword Search

Option 1. Enter a keyword

Enter a keyword by using one of the formats in the table below.  Then press the "Submit" button to search.

Notes:

• Keywords are not case sensitive.

Example: Enter calibration, Calibration, or CALIBRATION.

• If no matches are found among the Gateway keywords and properties, substance names are searched.

Option 2. Select the first letter of a keyword

Click the first letter of the keyword of interest. A list of all keywords starting with that letter will be displayed.  Click a keyword in the list to search.

Property Search

There are two different property searches:  Name and Category.  Click the hyperlink for the desired type.  The default is to search by Name.

Property Search by Name

Option 1. Enter a property

Enter a property by using one of the formats in the following table.  Then press the "Submit" button to search.

Notes:

• Enter properties as singular nouns.

Example: Enter boiling point, not boiling points.

• Properties are not case sensitive.

Example: Enter density, Density, or DENSITY.

Option 2. Select the first letter of your property

Click the first letter of the property of interest.  A list of all properties starting with that letter will be displayed.  Click a property in the list to search.

Property Search by Category

Step 1. Select Major Category

1. Click the down arrow with the Major Category box to display a list of major property categories, e.g., Electricity.
2. Select the desired major property category. (Note that the selection made here will determine the values in the Minor Category select box.)
3. Press the "Submit" button to search for all databases with the selected major category OR go to Step 2.

Step 2. Select Minor Category

1. Click the down arrow with the Minor Category box to display a list of minor property categories available for the chosen major category, e.g., electrical property.
2. Select the desired minor category. (Note that the selection made here will determine the values in the Specific Property select box.)
3. Press the "Submit" button to search for all databases with the selected minor category OR go to Step 3.

Step 3. Select Specific Property

1. Click the down arrow with the Specific Property box to display a list of specific properties available for the chosen minor category, e.g., electromotive force.
2. Select the desired specific property.
3. Press the "Submit" button to search for all databases with the selected specific property.

Substance Name Search

There are three different substance searches: Name, Advanced Search, and Element.  Click the hyperlink for the type desired.  The default is to search by Name.

Substance Search by Name

Enter a substance name, e.g., methane, benzene, proteinase, silicon nitride, fiberboard, or glass. Then press the "Submit" button to search. If no hits are found for the exact substance name entered, try entering partial names using the Advanced Search.

Notes:

• Substance names must be entered exactly.
• Asterisks are not allowed. Use the Advanced Substance Search Menu to perform searches using partial substance names.
• Substance names are not case sensitive.

Example: Enter benzene, Benzene, or BENZENE.

Advanced Substance Search

Up to three partial text strings can be entered as follows:

Step 1. Input partial text string 1

1. Click the down arrow on the box displaying Contains to bring up four options: Contains, Starts with, Ends with, and Does not contain.
2. Select the desired option.
3. Enter text for the first partial text string in the adjacent entry box, e.g., chloro.
4. Press the "Find Matches" button to search for matching substance names OR go to Step 2.

Step 2. Input partial text string 2

1. Click the down arrow on the box displaying Contains to bring up four options: Contains, Starts with, Ends with, and Does not contain.
2. Select the desired option.
3. Enter text for the second partial text string in the adjacent entry box, e.g., fluoro.
4. Click the "Find Matches" button to search for matching substance names OR go to Step 3.

Step 3. Input partial text string 3

1. Click the down arrow on the box displaying Contains to bring up four options: Contains, Starts with, Ends with, and Does not contain.
2. Select the desired option.
3. Enter text for the third partial text string in the adjacent entry box, e.g., hydro.
4. Click the "Find Matches" button to search for matching substance names.

After the Find Matches search is completed, all substance names matching the query criteria will be displayed in a pop-up window. Click a substance in the list to search for all databases with data for that substance.

Notes:

• Partial names are not case sensitive.

Example: Enter hydrocarbon, Hydrocarbon, or HYDROCARBON.

Substance Search by Element

Click the element in the periodic table to search for databases containing data for that element.

Then click on a database in the search results list to link to that specific database.  Note that for some databases, the links go directly to the data page that pertains specifically to the selected element. For other databases, the links go to the opening screen.

JPCRD Search

To search articles published in the Journal of Physical and Chemical Reference Data, click [JPCRD].

Searching is provided on any combination of title, author name, publication year, and either keyword or substance. There is an implicit AND between each of the criteria. For example, if you enter "salt" in the title box and select '1980' as one of the values for year published and click submit, all articles published in 1980 that have 'salt' in their titles will be listed on the results page. Only keyword or substance can be searched at one time.

If any article in the search is available online in Adobe PDF format, the Full Text PDF link will take you to the article. If it is not available online, click on Abstract to view the abstract or Order to order the article from the Journal of Physical and Chemical Reference Data web site.

If the data published in the article are available in the IUPAC - NIST Solubility Database, click Solubility Database to show the systems in that volume of the IUPAC - NIST Solubility Database.