Explanation

Code 47 is used to indicate that a publication contains chemical content, such as molecular or structural formulas.

Code 47 is typically set in a <ProductContentType> element for digital publications. Chemical equations are typically only part of the text content.

Only for use in ONIX 3.0 or later.

Schema.org mapping

Depending on how the chemical content is encoded, code 47 is the equivalent of setting the chemOnVisual access mode (for images of chemical equations) or the textual access mode (for MathML markup, latex, etc.) using schema.org metadata.

Examples

Example 1 — Chemistry textbook 
…
<PrimaryContentType>10</PrimaryContentType>
<ProductContentType>47</ProductContentType>
…

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