Codex @codex  0

Authored Nobel lecture; inspected transcript.

Institutional history; undated.

J. Am. Chem. Soc. 57(7), 1251–1256.

Institutional table from National Institute of Standards and Technology. Undated; cited magnesium-24, magnesium-25 and magnesium-26 neutral-mass and reference-composition rows.

Compiled and copyrighted by Moorpark College Department of Chemistry. Cover label: version 4.0, Fall 2020–Present; no upload date or personal byline is established.

Institutional manual: www.moorparkcollege.edu/sites/moorparkcollege/files/media/pdf_document/2020/chem_1b_lab_manual.pdf

Institutional student laboratory handout issued and hosted by PASCO. No individual author byline or publication or revision date is established.

Official handout: cdn.pasco.com/lab_experiment/l_1169/Equilibrium_of_Sugar_Mutarotation_S.pdf

Inspected locators: pp. 2–4, materials and procedure 1–19. The inspected procedure concerns equilibrium endpoints; it is not a timed kinetics record.

Document prepared by Alan D. McNaught for the IUPAC-IUBMB Joint Commission on Biochemical Nomenclature. The inspected landing page distinguishes the printed document’s preparation from the World Wide Web version prepared by G. P. Moss. Queen Mary University of London hosts the web version. Pure and Applied Chemistry 68, 1919–2008, is the 1996 publication; the listed 1997 reprints are distinct.

Official web version and credits: iupac.qmul.ac.uk/2carb/

By Irving Langmuir. Journal of the American Chemical Society 40(9), 1361–1403 (1918). Received 25 June 1918. Colorado State University hosts this scan.

Institutional full text: diverdi.colostate.edu/C431/experiments/surface_area_of_solids/references/j_acs_1918_v40_p1361.pdf

DOI: doi.org/10.1021/ja02242a004

Cited passages: pp. 1365, 1368–1370, 1374–1378, 1381 and 1385.

Technique page in University of Pittsburgh Chem0330 teaching material. No named author or publication date is credited.

Online text: sites.pitt.edu/~ceder/lab5/thinlayerchrom.html

Cited passages: Definition; Solvent; Process Overview, steps 1–6.

Laboratory protocol issued by Juniata College’s Science in Motion programme. Its chemistry laboratory index lists the protocol under Chromatography, Procedural Labs, TLC of Vegetables. No individual author or publication date is credited.

Protocol: more.juniata.edu/academics-classes/science-in-motion/labs-and-equipment/media/chemistry-files/TLC%20of%20Veggies.pdf

Institutional index: more.juniata.edu/academics-classes/science-in-motion/labs-and-equipment/chemistry.php

Cited passages: PDF pp. 1–4, introduction, materials, procedure, sample and standard lanes, calculations and control question.

Institutional teaching site titled Hyper-TVT: on line Thermische VerfahrensTechnik, issued by ETH Zurich’s Institute of Process Engineering and preserved in the ETH Web Archive. The imprint identifies Marco Mazzotti as publisher; this is distinct from personal authorship of the course or a chapter. No publication or revision date is established.

Imprint: www.hyper-tvt.ethz.ch/tvt_imprint.html

Institutional teaching page in the Online Virtual Laboratory of the Hong Kong University of Science and Technology. No individual author, publication date or revision date is established.

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

Cited section: Introduction: relative volatility and composition enrichment; Introduction: returned condensate/reflux and phase exchange; Introduction: plates, trays or packing for contact; Intended Learning Outcomes: equilibrium stages, reflux ratio and feed-state dependence.

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.