DETHERM ... on the WEB

Registration for DETHERM & CHEMSAFE ... on the WEB (Overview)

Important information:

  • By registering you will create an user account for downloading data sets at the prices announced online.
  • After providing us with all registration information, you are requested to print, sign and send the generated customer agreement and order form to our hands.
  • As soon as we receive your fax or mail, we will activate your account. You will get a notice by email.

Invoicing & billing:

  • Account with credit card: Your card will be charged before you perform the download. A proforma invoice will be send electronically directly afterwards. An invoice in paper will be send within the next business days.
  • Account with invoicing: The invoicing is performed on a quarterly base. We will send you an invoice over the total amount of your downloads within a quarter at the end of the quarter.
  • Prepaid account: It is also possible to setup a prepaid account. Contact us directly on the sum you want to charge to your account. After your invoice is paid, you can download data until the prepaid amount is reached.

Users from outside the European Union:

  • Due to German tax regulations we need a taxpayer certificate for your company. It has to be updated yearly and you usually get this certificate from your local tax authority. You can upload the certificate using your account. Without the certificate we have to charge German VAT.

The registration is a five step process:

  1. Indicate all required information (user and company name, billing adress, order number, etc.)
  2. Review this information
  3. Accept terms of use
  4. Choose login name and password
  5. Print the registration form, sign it and mail it to our hands(Why ?)


Since the billing is performed on a quarterly base, you will usually not have to pay your fees directly after (or even before) downloading. Since we deliver therefore the data in advance "on credit", we would like to have some kind legal of contract with you.

Another legal aspect is the VAT verification required by our tax authorities.

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Aim of this website?

This website allows you to search online within DECHEMA's numerical databases:

  • DETHERM: thermophysical properties of pure substances and mixtures
  • CHEMSAFE: recommended safety data of gases, liquids and dusts

Even without registration you can search and preview the databases.

With registration you can also download the data in various formats:

  • Direct display
  • PDF
  • XLS
  • IKC

EU-Citizens only:

Please choose your country for proper VAT calculation

For electronic delivery to countries outside the European Union (EU):

  • VAT is not charged, if you supply a Tax Payer Certificate of your country.
  • German VAT is charged, if you do not supply a Tax Payer Certificate.