chemfyi.com valid
ChemFYI
Comprehensive chemistry reference — periodic table of 118 elements, chemical compounds, reactions, experiments, industrial applications, glossary terms, and guides. Interactive tools including molecular structure drawer, molar mass calculator, pH calculator, and more.
For agents: Chemistry reference covering the 118 elements, compounds, reactions and glossary, plus interactive tools like a molar mass and pH calculator.
periodic tablechemistry referencemolar mass calculatorph calculatorchemical compounds
- Authority
- 45 reach 0 · trust 5 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://chemfyi.com/llms.txt
- llms-full.txt
- https://chemfyi.com/llms-full.txt
- Sections
- 12
- Links
- 32
- Size
- 6812 bytes
- Categories
- Science and research · Documentation and reference
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- Audience
- mixed · agents can: read docs, search content · en
- First seen
- 2026-10-18T20:55:27.757Z
- Last checked
- 2026-10-18T20:59:49.963Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-21T13:50:08.036Z. Cached copy · Source on chemfyi.com
# ChemFYI
> Comprehensive chemistry reference — periodic table of 118 elements, chemical compounds, reactions, experiments, industrial applications, glossary terms, and guides. Interactive tools including molecular structure drawer, molar mass calculator, pH calculator, and more.
## Data Scope
- 118 chemical elements with atomic properties, electron configurations, and physical data
- Chemical compounds with formulas, IUPAC names, molar mass, PubChem CIDs, SMILES notation
- Chemical reactions with balanced equations, thermodynamic data, and reaction types
- Experiments with step-by-step protocols, safety warnings, and difficulty levels
- Industrial applications across 10 sectors (pharmaceutical, petrochemical, materials, etc.)
- Glossary terms organized by category (thermodynamics, organic chemistry, etc.)
- Guides in series with full markdown content and reading time estimates
- 10 interactive tools: structure drawer, molar mass, pH, dilution, ideal gas law, and more
- Element comparisons (N² pages) with side-by-side property analysis
- 15 languages supported with i18n
## URL Patterns
- Append `.md` to any URL for plain-text markdown format.
- i18n: URL prefix `/{lang}` for non-English (ko, ja, zh-hans, es, fr, de, pt, ru, vi, tr, ar, hi, th, id).
- `/` — Homepage with featured elements and stats (e.g. `/`)
- `/elements/` — Browse all 118 elements (e.g. `/elements/`)
- `/element/{symbol}/` — Element detail page by symbol (e.g. `/element/fe/`)
- `/category/{slug}/` — Element category (e.g. alkali metals) (e.g. `/category/alkali-metals/`)
- `/periodic-table/` — Interactive periodic table (e.g. `/periodic-table/`)
- `/compare/` — Element comparison index (e.g. `/compare/`)
- `/compare/{symbol1}-vs-{symbol2}/` — Element comparison (e.g. `/compare/fe-vs-cu/`)
- `/compounds/` — Browse chemical compounds (e.g. `/compounds/`)
- `/compound/{slug}/` — Compound detail with structure and properties (e.g. `/compound/water/`)
- `/reactions/` — Browse chemical reactions (e.g. `/reactions/`)
- `/reaction/{slug}/` — Reaction detail with balanced equation (e.g. `/reaction/combustion-of-methane/`)
- `/reactions/type/{type}/` — Reactions by type (e.g. `/reactions/type/combustion/`)
- `/experiments/` — Browse experiments by category (e.g. `/experiments/`)
- `/experiment/{slug}/` — Experiment protocol with steps (e.g. `/experiment/flame-test/`)
- `/experiments/category/{cat}/` — Experiments by category (e.g. `/experiments/category/flame-test/`)
- `/applications/` — Industrial applications of chemistry (e.g. `/applications/`)
- `/application/{slug}/` — Application detail (e.g. `/application/haber-process/`)
- `/applications/sector/{sector}/` — Applications by sector (e.g. `/applications/sector/pharmaceutical/`)
- `/glossary/` — Chemistry glossary index (e.g. `/glossary/`)
- `/glossary/{slug}/` — Glossary term definition (e.g. `/glossary/electronegativity/`)
- `/guides/` — Chemistry guides (e.g. `/guides/`)
- `/guide/{slug}/` — Guide article (e.g. `/guide/introducti
…Related sites
Other listed sites in Science and research. See the whole category →
| Domain | Title | Category | Country | Authority | llms.txt | llms-full.txt | Save |
|---|---|---|---|---|---|---|---|
| unesco.org | UNESCO | documentation Government and public services Science and research +1 | FR | 76 | ✓ | ✓ | |
| deepmind.google | Google DeepMind | documentation AI and machine learning Science and research +1 | US | 71 | ✓ | ✓ | |
| frontiersin.org | Frontiers (www.frontiersin.org) | documentation Science and research | IE | 71 | ✓ | ||
| pewresearch.org | Pew Research Center | documentation Science and research | US | 70 | ✓ | ||
| phys.org | Phys.org | documentation Science and research Media | US | 69 | ✓ | ||
| grandviewresearch.com | Grand View Research | transactional Data and analytics Business software +1 | 68 | ✓ | |||
| consensus.app | Consensus | interface Science and research AI and machine learning | 67 | ✓ | ✓ | ||
| doabooks.org | Over 109,000 peer-reviewed books | documentation Science and research | 67 | ✓ | ✓ |
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