Get started

    API Endpoint

        https://api.periodiske-system.dk/
                

This API provides you with information from the periodic table. Make a request to any of the endpoints to receive the exact information you need. The API also features a variety of functions like parsers for checmical formulas.

To use this API, you need an API key. Please contact us at rla@movir.dk to get your own API key.

Parser

# Here is a curl example
$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.periodiske-system.dk/parser/cleanFormula",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => array('formula' => 'H4(SO4)2'),
));

$response = curl_exec($curl);

curl_close($curl);

                

To pretty print a chemical formula in HTML, call the /parser/cleanFormula endpoint :
https://api.periodiske-system.dk/parser/cleanFormula

Parser example :
{"clean_formula":"H<sub>4</sub>(SO<sub>4</sub>)<sub>2</sub>"}
                

QUERY PARAMETERS

Field	Type	Description
api_key	String	Your API key.
formula	String	The formula to parse

Retrieve elements

# Here is a curl example
$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://api.periodiske-system.dk/elements/full",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET"
));

$response = curl_exec($curl);

curl_close($curl);

                

You can load all elements in JSON format by calling the /parser/cleanFormula endpoint :
https://api.periodiske-system.dk/elements/full

QUERY PARAMETERS

Field	Type	Description
api_key	String	Your API key.

Errors

The Westeros API uses the following error codes:

Error Code	Meaning
X000	Some parameters are missing. This error appears when you don't pass every mandatory parameters.
X001	Unknown or unvalid secret_key. This error appears if you use an unknow API key or if your API key expired.
X002	Unvalid secret_key for this domain. This error appears if you use an API key non specified for your domain. Developper or Universal API keys doesn't have domain checker.
X003	Unknown or unvalid user token. This error appears if you use an unknow user token or if the user token expired.