Sodium phosphate buffers can acidify sharply on freezing: crystallization of the disodium salt as the dodecahydrate caused abrupt pH drops after ice began to form.
preclinical — animal, cell or mechanistic work — not yet about people
every claim resolves to its source
All 2 citations resolve to their original source. · 0 posts naming it, 0 members counted once each.
Summary
Sodium phosphate buffers can acidify sharply on freezing: crystallization of the disodium salt as the dodecahydrate caused abrupt pH drops after ice began to form. · pmid:11336359
History
Blending Good's buffers such as MES with 50 mM sodium phosphate was proposed to cancel the phosphate buffer's freezing-induced acidity drop. · pmid:33271311
Identity
No public registry record is shown for this page: a buffer is a system of components, not one compound.
Where the evidence actually sits
Preclinical only100%
Proportion of the 2 claims about Phosphate buffer standing at each tier. Community volume is shown on the Consensus tab beside this and is never averaged into it.
Living evidence history
2 resolved citations, oldest to newest, coloured by tier. Retractions and contradictions land here as they are recorded.
Structure
No structure representation on record. PepJunkie draws only what an authoritative record supplies; for a peptide that is the residue sequence, and none has been curated for Phosphate buffer yet.
Dose evidence, rung by rung
No established safe human dose. Nothing on file establishes one. That is a statement about the evidence PepJunkie holds, not a promise about the molecule.
Approved-label dose· a resolved regulatory document names a labelled dose
nothing resolved on this rung
Studied human doses· resolved human studies at the established tier
nothing resolved on this rung
Observational evidence· resolved human data at the emerging tier: thin, or contested
nothing resolved on this rung
Community-reported protocols· protocol propositions from distinct members, counted once per human
nothing resolved on this rung
Preclinical evidence· resolved animal, cell or mechanistic work
Effect of initial buffer composition on pH changes during far-from-equilibrium freezing of sodium phosphate buffer solutions. · pmid 11336359 · 2001
Making good's buffers good for freezing: The acidity changes and their elimination via mixing with sodium phosphate. · pmid 33271311 · 2021
2 resolved citations, 0 unresolved (an unresolved citation lends nothing). Community volume is its own rung and is never averaged into the evidence rungs.
Negative findings
failure is information
Nobody has filed a failure yet. Failures are information; this list is waiting for an honest one.