About OYSI
Chemistry expertise for Europe – clear, reliable, up-to-date.
OYSI GmbH
OYSI is a German company based in Saarbrücken, specializing in chemical trading and technical chemistry solutions. Since our founding, we combine hands-on experience in hazardous substance management with digital expertise. Our chemical lexicon provides European professionals with reliable CLP/GHS safety data – in four languages.
Our Expertise
Our team combines knowledge in chemistry, hazardous substance management and regulation:
- Chemical trading and technical consulting
- CLP/GHS classification per Regulation (EC) No 1272/2008
- REACH Regulation and SVHC assessment
- ADR dangerous goods transport
- Safety Data Sheet preparation and review
Our Data Sources
All substance data comes from official, authoritative sources and is regularly updated:
ECHA (C&L Inventory)
European Chemicals Agency – official CLP classification
PubChem (NIH/NCBI)
US National Library of Medicine – chemical structures and identifiers
GHS (UN)
Globally Harmonized System – international classification standard
ADR 2025
European Agreement concerning the Carriage of Dangerous Goods by Road
Quality Assurance
Each lexicon entry goes through a multi-step process:
- 1Raw data extraction from ECHA and PubChem via official APIs
- 2Automated consistency checks (CAS numbers, formula validation, GHS codes)
- 3AI-assisted enrichment and translation into 4 languages
- 4Editorial quality review for scientific accuracy
- 5Regular updates when CLP classification changes
Contact
Questions about our data or want to report a correction?