Hectorite ((Mg2.67Li0.33)Si4Na0.33(F0.5-1(OH)0-0.5)2O10)
Hectorite is a mineral with formula of Na0.3(Mg,Li)3Si4O10(F,OH)2·nH2O. The IMA symbol is Htr. — RRUFF Project
- IUPAC name
- lithium;magnesium;sodium;1,3,5,7-tetraoxido-2,4,6,8,9,10-hexaoxa-1,3,5,7-tetrasilatricyclo[5.1.1.13,5]decane;dihydroxide
- Molecular formula
- H2LiMgNaO12Si4-2
- Molecular weight
- 360.6 g/mol
- Exact mass
- 359.8531460 Da
- Topological polar surface area
- 150.0 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 12
- Covalent units
- 6
- Defined stereocentres
- 0
Also known as
14 more reported names
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Note: This chemical does not meet GHS hazard criteria for 26.3% (169 of 642) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H319 (73.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P264+P265, P280, P305+P351+P338, and P337+P317 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 642 reports by companies from 3 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 169 of 642 reports by companies.; There is 1 notification provided by 473 of 642 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Cosmetic Ingredient Review Conclusion: The Panel also concluded that the following 7 ingredients are safe in cosmetics in the present practice of use and concentration described in this safety assessment, with the exception that the available data are insufficient to make a determination of safety for these ingredients in products that may be incidentally inhaled:Hectorite Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications Source: Cosmetic Ingredient Review (CIR)
- Cosmetic Ingredient Review Link: CIR ingredient: Hectorite Source: Cosmetic Ingredient Review (CIR)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.