To access all features Log In
Search Chemicals
Tautomers
Substructure
Exact
Not Substr.
Query Chemical Structure

Add Properties
Browse
FrequencyTerm
No records found.
Browse
    Log In - Individual User
    You are not within the network of a subscribing institution.
    Please sign in with an Individual User account to continue.
    Note that Workspace accounts are not valid.

    Confirm Log Out
    Are you sure?
    Log In to Your Workspace
    Your personal workspace allows you to save and access your searches and bookmarks.
    Username
    Password
    Remember Me
    This will save a cookie on your browser

    If you do not have a workspace Log In click here to create one.
    Forgotten your workspace password? Click here for an e-mail reminder.
    Confirmation
    Are you sure you want to log out from your workspace?
    Create your personal workspace
    Title
    First Name (Given)
    Last Name (Family)
    Email address
    Username
    Password
    Confirm Password
    Incorrect login details
    You have entered your Individual User account sign in credentials instead of Workspace credentials.
    While using this network, a personal workspace account can be created to save your bookmarks and search preferences for later use.
    Click the help icon for more information on the differences between Individual User accounts and Workspace accounts.
    My Account
    Account Details
    Change Your Workspace Password
    Username:
    Current Password
    New Password
    Confirm New Password
    Update your Workspace Details
    Username:
    Title
    First Name (Given)
    Last Name (Family)
    Email address
    Workspace Log In New Password
    Please enter your username and/or your e-mail address:

    Username
    Email Address
    Saved Searches
    Saved Searches for
    NameDate CreatedDate UpdatedDelete
    No Searches Found
    Save Search
    Customise Search Defaults
    Default Properties For New Searches
    CHEMnetBASE Help
    Tour and Help

    Welcome

    CRC Chemical Dictionaries allow you to search an extensive database of chemical compounds by name, physical property, structure and more. This documentation will guide you through getting the most from this Chemical Dictionary, including:

    • Search for any chemical compound by name, property or structure
    • View a fully customisable search result list - add any available property to the search results and sort the result list
    • View a full entry of the compound, including structure
    • Export search results
    • Save searches for future use

    Take a tour of the features by clicking on the tabs above or just jump to the section you need.

    Structure Draw
    Import
    Import a structure from a file or paste an InChI, SMILES or SMARTS
    Select from the following file types: cdx, cdxml, cml, csmol, csrdf, csrgf, cssdf, cube, cxsmiles, inchi, mol, mol2, mrv, pdb, rdf, rgf, sdf, smarts, smiles, xyz

    Select File

    We use cookies to improve your website experience. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. By continuing to use the website, you consent to our use of cookies.
    Cookie Policy

    Cookie Policy

    We have developed this cookie policy (the “Cookie Policy”) in order to explain how we use cookies and similar technologies (together, “Cookies”) on this website (the “Website”) and to demonstrate our firm commitment to the privacy of your personal information.

    The first time that you visit our Website, we notify you about our use of Cookies through a notification banner. By continuing to use the Website, you consent to our use of Cookies as described in this Cookie Policy. However, you can choose whether or not to continue accepting Cookies at any later time. Information on how to manage Cookies is set out later in this Cookie Policy.

    Please note that our use of any personal information we collect about you is subject to our Privacy Policy.

    What are Cookies?

    Cookies are small text files containing user IDs that are automatically placed on your computer or other device by when you visit a website. The Cookies are stored by the internet browser. The browser sends the Cookies back to the website on each subsequent visit, allowing the website to recognise your computer or device. This recognition enables the website provider to observe your activity on the website, deliver a personalised, responsive service and improve the website.

    Cookies can be ‘Session Cookies’ or ‘Persistent Cookies’. Session Cookies allow a website to link a series of your actions during one browser session, for example to remember the items you have added to a shopping basket. Session Cookies expire after a browser session and are therefore not stored on your computer or device afterwards. Persistent Cookies are stored on your computer or device between browser sessions and can be used when you make subsequent visits to the website, for example to remember your website preferences, such as language or font size.

    Cookies We Use and Their Purpose

    We use three types of Cookies - ‘Strictly Necessary’ Cookies, ‘Performance’ Cookies and ‘Functionality’ Cookies. Each type of Cookie and the purposes for which we use them are described in this section. To learn about the specific Cookies we use, please see our List of Cookies.

    1. Strictly Necessary Cookies

    ‘Strictly Necessary’ Cookies enable you to move around the Website and use essential features. For example, if you log into the Website, we use a Cookie to keep you logged in and allow you to access restricted areas, without you having to repeatedly enter your login details. If you are registering for or purchasing a product or service, we will use Cookies to remember your information and selections, as you move through the registration or purchase process.

    Strictly Necessary Cookies are necessary for our Website to provide you with a full service. If you disable them, certain essential features of the Website will not be available to you and the performance of the Website will be impeded.

    2. Performance Cookies

    ‘Performance’ Cookies collect information about how you use our Website, for example which pages you visit and if you experience any errors. These Cookies don’t collect any information that could identify you – all the information collected is anonymous. We may use these Cookies to help us understand how you use the Website and assess how well the Website performs and how it could be improved.

    3. Functionality Cookies

    ‘Functionality’ Cookies enable a website to provide you with specific services or a customised experience. We may use these Cookies to provide you with services such as watching a video or adding user comments. We may also use such Cookies to remember changes you make to your settings or preferences (for example, changes to text size or your choice of language or region) or offer you time-saving or personalised features.

    You can control whether or not Functionality Cookies are used, but disabling them may mean we are unable to provide you with some services or features of the Website.

    First and Third Party Cookies

    The Cookies placed on your computer or device include ‘First Party’ Cookies, meaning Cookies that are placed there by us, or by third party service providers acting on our behalf. Where such Cookies are being managed by third parties, we only allow the third parties to use the Cookies for our purposes, as described in this Cookie Policy, and not for their own purposes.

    The Cookies placed on your computer or device may also include ‘Third Party’ Cookies, meaning Cookies that are placed there by third parties. These Cookies may include third party advertisers who display adverts on our Website and/or social network providers who provide ‘like’ or ‘share’ capabilities (see the above section on Targeting or Advertising Cookies). They may also include third parties who provide video content which is embedded on our Website (such as YouTube). Please see the website terms and policies of these third parties for further information on their use of Cookies.

    To learn about the specific First Party and Third Party Cookies used by our, please see our List of Cookies.

    Managing Cookies

    You always have a choice over whether or not to accept Cookies. When you first visit the Website and we notify you about our use of Cookies, you can choose not to consent to such use. If you continue to use the Website, you are consenting to our use of Cookies for the time being. However, you can choose not to continue accepting Cookies at any later time. In this section, we describe ways to manage Cookies, including how to disable them.

    You can manage Cookies through the settings of your internet browser. You can choose to block or restrict Cookies from being placed on your computer or device. You can also review periodically review the Cookies that have been placed there and disable some or all of them.

    You can learn more about how to manage Cookies on the following websites: www.allaboutcookies.org and www.youronlinechoices.com.

    Please be aware that if you choose not to accept certain Cookies, it may mean we are unable to provide you with some services or features of the Website.

    Changes to Cookie Policy

    In order to keep up with changing legislation and best practice, we may revise this Cookie Policy at any time without notice by posting a revised version on this Website. Please check back periodically so that you are aware of any changes.

    Questions or Concerns

    If you have any questions or concerns about this Cookie Policy or our use of Cookies on the Website, please contact us by email to [email protected]

    You can also contact the Privacy Officer for the Informa PLC group at [email protected].

    Our Cookies

    Here is a list of cookies we have defined as 'Strictly Necessary':

    Taylor and Francis 'First Party' Cookies

    JSESSIONID

    TandF.ACCT.CNB.cookieId

    TandF.WS.CNB.cookieId

    TandF.SU.CNB.cookieId

    TandF.PORTAL.cookiesAgreed

    TandF.LOGIN.cookiesAgreed

    TandF.HBCP.cookiesAgreed

    TandF.CCD.cookiesAgreed

    TandF.DNP.cookiesAgreed

    TandF.DOC.cookiesAgreed

    TandF.DOD.cookiesAgreed

    TandF.DIOC.cookiesAgreed

    TandF.POLY.cookiesAgreed

    TandF.DFC.cookiesAgreed

    TandF.DMNP.cookiesAgreed

    TandF.DCCC.cookiesAgreed

    TandF.POC.cookiesAgreed

    Here is a list of the cookies we have defined as 'Performance'.

    'Third Party' Cookies

    Google Analytics:

    _ga

    _gid

    _gat

    Accessibility

    The Voluntary Product Accessibility Template (VPAT) is a self-assessment document which discloses how accessible Information and Communication Technology products are in accordance with global standards.

    The VPAT disclosure templates do not guarantee product accessibility but provide transparency around the product(s) and enables direction when accessing accessibility requirements.

    Taylor & Francis has chosen to complete the International version of VPAT which encompasses Section 508 (US), EN 301 549 (EU) and WCAG2.1 (Web Content Accessibility Guidelines) for its products.

    Click here for more information about how to use this web application using the keyboard.

    This is replaced with text from the script
    This is replaced with text from the script
    Top Notification Bar Dialog Header
    Property Descriptions
    1H NMR
    Units: ppm, relative to TMS
    13C NMR
    Units: ppm, relative to TMS
    All Entries
    This field enables you to select all of the entries in the database. If you wish to retrieve all of the entries, type y in the search box.
    Boiling Point
    Units: °C, at 760 mmHg
    CAS Registry Nos.
    CAS number of a compound
    Chemical Name
    CRC Number
    Unique ID for the compound in CRC Chemical Dictionaries.
    Density
    Units: g cm-3, temperature in °C
    Dielectric Constant
    At temperature in °C.
    Dipole Moment
    Units: D
    Enthalpy of Fusion
    Units: kJ mol-1
    Enthalpy of Vaporization
    Units: kJ mol-1, at boiling point
    Flash Point
    Units: °C
    IR Peak
    Search for a peak value or range in cm-1
    Magnetic Susceptibility
    Units: 10-6 cm3 mol-1
    Mass Spectral Peak
    Search for peak value or range. Results show peak values and relative initensities.
    Melting Point
    Units: °C
    Molecular Formula
    Molecular Formula by Element
    Molecular Weight
    Raman Peak
    Search for a peak value or range in cm-1
    Refractive Index
    Values at 589 nm
    Threshold Limit Value (STEL)
    Units: ppm. Short-term Exposure Limit.
    Threshold Limit Value (TWA)
    Units: ppm. Time-weighted Average.
    UV Peaks
    Search for a peak value or range in nm. Results show peaks (in nm) and molar absorption coefficients (in L mol-1 cm-1)
    Vapor Pressure
    Units: kPa, at 25 °C