Library Guides: CHM 277: General Chemistry: Citing Sources

American Chemical Society (ACS) Style

ACS Guide to Scholarly Communication
Tip: For examples of citations, see the ACS Style Quick Guide. For more details see Chapter 4.3.2 Creating References and Chapter 4.3.5 Reference Formatting & Examples by Source Types.
ACS: Preparing a Research Report
Helpful guidelines for undergraduate students on preparing a research report.
CASSI (CAS Source Index)
Use CASSI to find journal title abbreviations. These abbreviations are needed for journal article references in ACS style.

Common ACS Examples for UP Students

For detailed style guidelines see: Chapter 4.3.5.14 Data & Datasets

For an online book or encyclopedia:

Cyclohexane. In CRC Handbook of Chemistry and Physics, 105th ed.; Rumble, J. R., Ed.; CRC Press, 2024. https://hbcp.chemnetbase.com/ (accessed 2024-08-19). (CAS RN: 110-82-7).

For an online database:

Cyclohexane. The Merck Index Online. Royal Society of Chemistry, 2013. https://www.rsc.org/Merck-Index (accessed 2024-08-15). (CAS RN: 110-82-7).

Cyclohexane. SDBSWeb. National Institute of Advanced Industrial Science and Technology, n.d. https://sdbs.db.aist.go.jp (accessed 2024-08-17). (CAS RN: 110-82-7).

Cyclohexane. SciFinder. CAS, n.d. https://scifinder.cas.org (accessed 2024-03-28). IR spectral data obtained from Bio-Rad Laboratories. (CAS RN: 110-82-7).

For detailed style guidelines see: Chapter 4.3.5.13 Safety Data Sheets

Found through a third-party such as University of Portland MSDS Online:

Cyclohexane; CAS RN: 110-82-7; 650455; ver. 6.8; Sigma-Aldrich: St. Louis, MO, May 25, 2023. Retrieved from University of Portland SDS Online. https://cloud.chemicalsafety.com (accessed 2024-08-15).

Found on manufacturer site:

Cyclohexane; CAS RN: 110-82-7; 227048; ver. 6.9; Sigma-Aldrich: St. Louis, MO, May 24, 2023. https://www.sigmaaldrich.com/US/en/sds/sial/227048 (accessed 2024-08-15).

Citing course PDFs for experiments or other supplemental information? Use the ACS format for citing a document from a website.

Example:

University of Portland, CHM375 Organic Chemistry Laboratory I. Experiment A1: Analysis of Compound Purity via Melting Point & Refractive Index. University of Portland, 2024. https://learning.up.edu/pluginfile.php/2528172/mod_resource/content/0/375_Exp%20A1.pdf (accessed 2024-08-30).

The Chemical Abstracts Service (CAS) Registry has 219 million organic and inorganic substances. Each substance has been given a unique registry number (RN) which is the most accurate way to search for information about it. Searching by substance name can be less accurate since there are different naming systems.

The registry number might be referred to as:

CAS Registry Number
CAS RN
CAS No.
CAS Number

The number has dashes which are considered part of the number. For example, the CAS RN for Cyclohexane is: 110-82-7. Include the dashes when searching by CAS RN in various databases, and also when including the number in a citation for a source.

APA Style (7th ed.) - UP Library Help

APA Style (7th edition) Citation Guide (UP Library)
Provides examples for citing a variety of sources from the common (journal articles, books, websites) to the less common (lecture notes, blog posts, etc.).

APA 7th ed. Sample Paper