Chemistry typography carries information through style
IUPAC’s guidance distinguishes italic symbols for physical quantities from upright roman symbols for units and labels. Its Green Book provides the broader reference for quantities, units and symbols in physical chemistry. These conventions concern the meaning of typeset symbols, rather than naming one chemistry font. A laboratory-themed display alphabet and the typography of a research equation serve different tasks and should be evaluated separately.
Separate formula editing from plain text styling
Prepare the actual formulas, quantity symbols and units your document contains before selecting the paragraph face. Keep a list of superscripts, subscripts and Greek characters required by the project. Use the authoring application’s equation or notation features where they preserve the intended structure. Changing every character to an italic font, or replacing it with a decorative Unicode alphabet, does not reliably express the distinctions a scientific expression needs.
Compare captions and ordinary prose together
Use Inter and Source Sans 3 as independent starting points for captions, labels and explanatory text in the specimens below. A paragraph specimen does not establish complete scientific-symbol or equation support. Place a realistic caption next to a formula in the actual application and compare apparent size, baseline and line spacing. Inspect easily confused characters and keep a number attached clearly to its intended unit without allowing cramped spacing to damage recognition.
Review notation after export
For an original teaching sheet, inspect a printed or exported proof containing the most complicated example, not only the title. Check whether subscripts collide, italics have been lost or a fallback font changes a symbol’s appearance. Follow the current publication or course requirements alongside the applicable notation reference. Keep a source version with editable expressions so later revisions do not depend on redrawing a flattened image.
Your questions, answered.
Is there one official chemistry font?
The cited IUPAC material establishes notation conventions and references, not a universal family for every chemistry document.
Should all scientific symbols be italic?
No. IUPAC distinguishes quantities from units and labels. Apply the relevant convention to the symbol’s role rather than italicizing everything.
Sources & background
Sources supporting this page’s explanations. Practical examples are our editorial suggestions.