Element lookup

chem.openverbs.com

Compute the molar mass (g/mol) of a chemical formula. Supports nested parentheses and brackets, element multipliers, and hydrate dot notation with coefficients (e.g. "Ca(OH)2", "CuSO4·5H2O", "K4[Fe(CN)6]"). Returns the total mass and the per-element composition with mass fraction percentages.

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#element lookup #periodic table element #atomic number lookup #element symbol lookup #atomic weight lookup #molar mass #calculate molecular weight #chemical formula mass

Category: Service
Networks: Base
Starting price: $0.004
Paid calls, 30 days: 36

Paid endpoints

3 endpoints, sorted by usage. Prices are per request.

Endpoint	Price	Network	Facilitator	Calls / 30d
POST/v1/element Look up a periodic-table element by exactly one of `symbol` (e.g. "Fe"), `name` (e.g. "iron") or atomic `number` (1..118). Returns its number, symbol, name, standard atomic weight and whether that weight is a true standard atomic weight.	$0.004	Base	Coinbase CDP	33
POST/v1/molar-mass Compute the molar mass (g/mol) of a chemical formula. Supports nested parentheses and brackets, element multipliers, and hydrate dot notation with coefficients (e.g. "Ca(OH)2", "CuSO4·5H2O", "K4[Fe(CN)6]"). Returns the total mass and the per-element composition with mass fraction percentages.	$0.004	Base	Coinbase CDP	2
POST/v1/search Search the periodic table by name or symbol substring. Exact matches rank first, then prefix matches, then substring matches. Returns up to `limit` elements (default 20) plus the total match count.	$0.004	Base	Coinbase CDP	1

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