Institutional laboratory manual by McMaster University, 1997/98 course edition. No whole-manual personal author is established. The dates printed on individual pages are recorded separately.

Online manual section: www.chemistry.mcmaster.ca/~chem2o6/labmanual/expt3/exp3-int.html

Unsigned teaching laboratory protocol issued and hosted by Columbia University. No individual author or instructor is credited. The page footer gives copyright 2007; no publication or revision date is established.

Online text: www.columbia.edu/cu/chemistry/ugrad/hssp/EXP_1.html

Cited passages: Experiment 1 title; Part 1 balance capacity note; Part 2 steps 1–3: paired air-exposure weighings and water preparation; Part 3 introductory paragraph and steps 1–6: preparation, two weighed KHP portions, complete transfer/dissolution/cooling, phenolphthalein, burette conditioning, 20-second endpoint, repeats; results table.

By Stephen F. Mason, printed as S. F. Mason, with the School of Chemical Sciences, University of East Anglia affiliation. Published in Pure and Applied Chemistry 24, 335–359, 1970. IUPAC hosts the journal PDF. The journal publication year is distinct from the 1969 meeting year.

Online text: publications.iupac.org/pac/pdf/1970/pdf/2402x0335.pdf

Cited passages: printed p. 335: title, S. F. Mason byline, School of Chemical Sciences, University of East Anglia; printed pp. 335–336, Introduction: different indices for opposite circular polarization, transparent-region circular birefringence and absorption counterpart circular dichroism.

Laboratory handout hosted by Truman State University. The first page gives the laboratory attribution AEMoody and the revision July 2013. The attribution is consistent with Anne Erwin Moody in the institutional context, but is not an explicit full-name author byline. The attached apparatus description on p. 3 explicitly credits an adaptation from I2R literature; no original instrument-design authorship is assigned to Moody or Truman.

Online text: chemlab.truman.edu/files/2015/07/Optical-Activity-Lab-2013.pdf

Cited passages: p. 1: title, Revised July 2013, Organic Chemistry Lab: AEMoody; pp. 1–2, Experiment 1: preparation, actual final volume, water blank extinction, sample extinction, corrected rotations and concentration plot; p. 2, Experiment 2: varying pathlength and corrected-rotation plot; p. 3, The Design and General Use of Simple Polarimeters: I2R adaptation, vertical path, yellow-filter incandescent/tungsten light, sheet polarizers, extinction eyepiece, coarse temperature/pathlength/angle tolerances.

Unsigned teaching laboratory protocol hosted on the Maricopa institutional chemistry teaching website. No personal author, separately verified institutional issuer, publication date or revision date is established.

Laboratory protocol: www.pc.maricopa.edu/chemistry/151LLWeb/caloimetry.htm

Cited passages: Introduction; Procedure A.1–8, B.1–5 and C.1–6; Additional Data Treatment.

Unsigned laboratory handout in the General Chemistry Lab collection associated with University of California, Santa Cruz. WebAssign hosts the document. No personal or institutional author byline is established. The course-index instructor is not attributed as handout author. No publication or revision date is established. The course-index 2011 shared copyright and the URL year are not handout publication dates.

Laboratory instructions: www.webassign.net/question_assets/ucscgencheml1/updated_labs2020/lab-10-procedure-2020.pdf

Course identity: www.webassign.net/question_assets/ucscgencheml1/index.html

Cited passages: pp. 1–9, Goal and Overview; preparation and filtration, steps 2–7; volumetric preparation and buret, steps 8–14; Titrations of the twice-filtered limewater; calculations; Discussion Questions and Review Topics.

By Mary Jane Simpson, as explicitly credited in the teaching-post byline. Posted 4 June 2019 in General Chemistry Lab News. Middlebury College hosts the post; that hosting role is distinct from the named authorship.

Official teaching post: sites.middlebury.edu/chem103lab/2019/06/04/limiting-and-excess-reagents/

Cited passages: Complete indexed official post and byline: Posted on June 4, 2019 by Mary Jane Simpson; Procedure: Prepare Kool-Aid Stock Solution, quantitative transfer and final-volume mark; Procedure: Measure Peak Absorption of Kool-Aid Solution, water blank and Genesys 30 peak scan; Procedure: Measure Absorbance of Solution at Various Concentrations, steps 1–5, Genesys 10 at peak wavelength, recorded blank and absorbance, 50 mL to 100 mL repeated halving; Background: inability to distinguish very dense, very dilute and very similar samples.

Lecture demonstration protocol issued and hosted by the University of Washington Department of Chemistry. No individual byline or publication date is established.

Online text: chem.washington.edu/lecture-demos/decomposition-h2o2-mno2

Cited passages: Chemicals and Solutions, 30% hydrogen peroxide and solid manganese dioxide; Materials and Procedure, cylinder, spatula, bubbles and heat; Alternate Procedure, Genie in a bottle, Apparatus and Materials and steps 3–6, a tea bag held above the liquid and released into contact. The reported readout is qualitative.

Chemistry teaching tutorial issued by the University of Wisconsin–Madison Department of Chemistry and hosted on its teaching website. No individual byline or publication date is established.

Online text: www2.chem.wisc.edu/deptfiles/genchem/sstutorial/Text13/Tx133/tx133.html

Cited passages: page title and final Example, identifying iodide-catalysed hydrogen peroxide decomposition.

Online text: nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100FWGL.TXT

By R. Maddalone and N. Garner, as printed on the title page; the acknowledgment identifies R. F. Maddalone as task order manager. Prepared by TRW, Defense and Space Systems Group, for the United States Environmental Protection Agency, Industrial Environmental Research Laboratory, Office of Research and Development. EPA issues and hosts the report; these roles are separate from personal authorship.

Publication: February 1977. Report EPA-600/7-77-010; TRW document 28055-6004-RU-00.

Cited passages: Title pages and byline: R. Maddalone, N. Garner; institutional recipient and preparation credit; Acknowledgment, printed p. ii, R. F. Maddalone as task order manager; Printed pp. 26–27, §1.4.4.2: phenolphthalein indicator blank, matching aliquot/indicator, procedure steps 1–3.

Online text: web.mit.edu/5.310/www/Titration_F05.pdf

Institutional issuer: Massachusetts Institute of Technology, Department of Chemistry; Experiment #5 in 5.310 Laboratory Chemistry. MIT hosts the handout. Footnote 1 credits Mircea D. Gheorghiu, printed as M. D. Gheorghiu, with adapting the experiment for microscale quantities, and acknowledges contributions from past instructors, course textbooks and other course affiliates. This is an adaptation credit, without a sole-author attribution. The inspected handout is undated; the F05 filename does not establish publication.

Cited passages: Titration-1, institutional masthead, §I and footnote 1; Titration-5, §IV.2, standardization preparation and replicate KHP samples; Titration-6, burette conditioning, bubbles, drainage time, endpoint paragraph and footnote 6; Titration-7, Day #2, volumetric pipette, dilution, magnetic stirring, thermal isolation, Figure 3; Titration-8, stable readings, small increments, hanging-drop warning, and pH 7 buffer check.

H. Diamond coauthored research on isomerization.^[ref]

Interconversion of isomers without changing the overall molecular formula. Conformational interconversion can be kinetically slow when rotation is hindered.

Institutional author and issuer of Distillation by Hong Kong University of Science and Technology, part of its Online Virtual Laboratory.

Online laboratory: virtuallabs.hkust.edu.hk/Distillation

Institutional author and issuer of Chem2O06 Laboratory Manual by McMaster University.

Laboratory manual: www.chemistry.mcmaster.ca/~chem2o6/labmanual/expt3/exp3-int.html

Institution associated with the General Chemistry Lab collection.

Course index: www.webassign.net/question_assets/ucscgencheml1/index.html

N. Garner coauthored an institutional report on sulfuric-acid emission measurements. Its acid-base analysis uses matching aliquot and indicator conditions when determining a blank correction.

Matching these conditions makes the subtraction chemically comparable. A blank made with different reagent amounts can introduce a systematic error even when the delivered titrant volume is read precisely.^[ref]

Author credited on the institutional acid/base-analysis report.^[ref]

R. Maddalone coauthored procedures for measuring sulfuric-acid emissions. The report describes correction for an indicator blank in acid-base analysis.

A matching blank estimates reagent consumption or response that is present even without the intended analyte. Subtracting it separates the sample contribution from the measurement background.^[ref]

Author credited on the institutional acid/base-analysis report.^[ref]

Barium platinocyanide is a salt of the tetracyanoplatinate(II) anion, commonly encountered as a hydrate. Its structure contains coordinated cyanide groups around platinum rather than free cyanide ions alone.

Its visible fluorescence under irradiation made it useful as a screen in the Röntgen X-ray discovery experiment. The screen converts otherwise invisible incident radiation into an optical signal.

Iodoacetone is the alpha-iodinated ketone $\mathrm{C}{\mathrm{H}}_3\mathrm{COC}{\mathrm{H}}_2\mathrm{I}$. It combines a carbonyl group with an adjacent carbon bearing a leaving group.

The molecule can therefore participate in chemistry at either functional site. Its identity is more specific than a mixture of acetone and an iodide salt: the iodine is covalently attached to the carbon framework.

Glycerophosphate denotes a phosphate ester of glycerol; added glycerophosphate served as a substrate in the rat-liver acid-phosphatase latency experiment.