Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

Compound Interest @compoundchem@mstdn.social

1/13/2026, 1:05:53 PM

Public

Rubber ducks – made from rubber, right? Wrong!

On #NationalRubberDuckyDay, this infographic unmasks the rubber duck's true chemical identity: https://wp.me/p4aPLT-8Uo

This infographic explains the chemistry of rubber ducks. It details how they transitioned from vulcanised rubber (hardened with sulfur cross-links) to polyvinyl chloride (PVC) in the 1940s. It illustrates how plasticisers are added to PVC to increase the space between polymer chains, making the material flexible. It notes that toxic phthalates (like DEHP) are now being replaced by safer alternatives like DINCH and adipates due to health concerns.

If you have a fediverse account, you can quote this note from your own instance. Search https://mstdn.social/users/compoundchem/statuses/115887934910613505 on your instance and quote it. (Note that quoting is not supported in Mastodon.)