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InventoryRef 3835515/10/2010

STRONTIUM HYDROXIDE

Strontium hydroxide

STRONTIUM HYDROXIDE is linked to 1 EU annex record on this page. Inventory note: III/63.

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Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Restricted entry found
Open this evidence		1English and EU languages
Great BritainEvidence linked
Restricted
Open this evidence		1English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandEvidence linked
Restricted
Open this evidence		1English
ASEANEvidence linked
Restricted
Open this evidence		1English and national languages
ChinaSource mapped
Official source mapped; ingredient rule not imported
0Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaSource mapped
Official source mapped; ingredient rule not imported
0Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaSource mapped
Official source mapped; ingredient rule not imported
0English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaEvidence linked
Restricted
Open this evidence		1English and Hindi
Saudi ArabiaEvidence linked
Restricted
Open this evidence		1Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 1311-10-0
CAS 1311-10-0PubChem CID 21617461

Strontium hydroxide octahydrate

IUPAC name
strontium;dihydroxide;octahydrate
Molecular formula
H18O10Sr
Molecular weight
265.76 g/mol
Exact mass
265.99560902 Da
Topological polar surface area
10.0 Ų
Hydrogen-bond donors
10
Hydrogen-bond acceptors
10
Covalent units
11
Defined stereocentres
0

Also known as

RefChem:203144620-683-4STRONTIUMHYDROXIDEOCTAHYDRATEStrontium hydroxide, octahydrateStrontium hydroxide [INCI]Strontium dihydroxide hydrateH18O10SrUNII-T2B33T08R4
3 more reported names
Strontium(II) Hydroxide hydrateStrontium hydroxide--water (1/2/8)DB-298978
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match21617461

Attributed physical-property, hazard, environmental and use annotations.

  • Note: This chemical does not meet GHS hazard criteria for 52% (104 of 200) of all reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H314 (48%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (13%): Causes serious eye damage [Danger Serious eye damage/eye irritation] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P260, P264, P264+P265, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 200 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 104 of 200 reports by companies.; There are 4 notifications provided by 96 of 200 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)

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
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

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.

PubChem 2D chemical structure for CAS 18480-07-4
CAS 18480-07-4PubChem CID 87672

Strontium hydroxide

Strontium dihydroxide is a strontium hydroxide. — ChEBI

IUPAC name
strontium dihydroxide
Molecular formula
H2O2Sr
Molecular weight
121.63 g/mol
Exact mass
121.91109156 Da
Topological polar surface area
2.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
3
Defined stereocentres
0

Also known as

Strontium hydroxide (Sr(OH)2)EPK818UET5Strontium hydroxide (Sr(OH)2), octahydrateCHEBI:35105STRONTIUM HYDROXIDE ANHYDROUSRefChem:932299CHEBI:35153242-367-1
11 more reported names
Strontium dihydroxide octahydrateT2B33T08R4strontium;dihydroxideSTRONTIUMHYDROXIDEstrontium(II) hydroxideH2O2SrEINECS 242-367-1UNII-EPK818UET5strontium(2+) hydroxideEC 242-367-1STRONTIUM HYDROXIDE [MI]
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for STRONTIUM HYDROXIDE

INCI name

STRONTIUM HYDROXIDE

Description

Strontium hydroxide

Record provenance

Inventory reference
38355
Imported identity
STRONTIUM HYDROXIDE
Source update
15/10/2010
European Commission CosIng source notes

Key data

CAS
18480-07-4 / 1311-10-0
EC
242-367-1
Restriction
III/63
Function
BUFFERING
Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#27966 · STRONTIUM HYDROXIDE

Ingredients with overlapping formulation functions

SODIUM SILICATEANTICORROSIVE, BUFFERING
SODIUM SUCCINATEBUFFERING
SODIUM TRIMETAPHOSPHATEANTICAKING, BUFFERING, CHELATING
SORBITYL DIMONIUM ANISATEANTIMICROBIAL, BUFFERING, FLAVOURING
SUCCINIC ACIDBUFFERING, FRAGRANCE
SULFURIC ACIDBUFFERING
TARTARIC ACIDBUFFERING, FRAGRANCE
TAURINEBUFFERING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How STRONTIUM HYDROXIDE appears in the CosIng inventory

The CosIng inventory lists STRONTIUM HYDROXIDE as a cosmetic ingredient and this page links it to 1 annex record. The inventory entry captures names and identifiers, while the annex record shows where the substance is prohibited, restricted or positively listed in EU cosmetics law.

STRONTIUM HYDROXIDE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

STRONTIUM HYDROXIDE appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for STRONTIUM HYDROXIDE reads: "III/63". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, STRONTIUM HYDROXIDE carries the following function designation(s):

CAS 18480-07-4 / 1311-10-0 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for STRONTIUM HYDROXIDE

This page combines the CosIng inventory entry for STRONTIUM HYDROXIDE with 1 linked Annex II–VI record from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research STRONTIUM HYDROXIDE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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