Guides
Short, sourced reference material on Safety Data Sheets and the GHS labelling system. Written for lab technicians, EHS coordinators, students and curious readers. All guides cite OSHA HazCom 2012, EU CLP (Regulation 1272/2008), and the UN GHS Rev. 10 where relevant.
What is a Safety Data Sheet?
5 minDefinition, purpose, who writes it, who must keep it, and how long.
SDS vs MSDS
4 minWhat changed in 2012, why the acronym matters, and what to do with old MSDS binders.
The 16 sections of an SDS
8 minEvery section of the ANSI Z400.1 / OSHA HazCom / GHS format, in order.
How to read an SDS in 5 minutes
5 minThe three sections most workers actually need before handling a product.
The 9 GHS pictograms explained
6 minEvery red-bordered diamond, what it means, and typical products behind it.
Section 8: exposure controls & PPE
7 minTWA, STEL, IDLH, ppm vs mg/m³, and the PPE selection logic.
H-codes: hazard statements decoded
6 minThe H2xx / H3xx / H4xx numbering system and the most common codes.
P-codes: precautionary statements decoded
6 minPrevention, response, storage and disposal codes on every GHS label.
Signal words: Danger vs Warning
3 minWhy only one appears on a label, and how it maps to hazard categories.
Hazard vs risk
4 minThe single distinction that separates a good safety culture from a bad one.
Chemical compatibility chart
7 minWhich chemicals can share a shelf and which will fight — acids, bases, oxidizers, flammables, water-reactives.
Safety glossary (60+ terms)
referenceEvery acronym on an SDS defined: TWA, STEL, IDLH, LD50, PEL, CLP, REACH, ADR and more.