SoleChem

Strontium hydroxide

CAS
18480-07-4
EC
242-367-1
Mol. Weight
121.63 g/mol

Description

Strontium hydroxide (CAS 18480-07-4) is a strong inorganic base used industrially for pH adjustment, neutralization, and as a strontium source in chemical synthesis. It is available in both anhydrous and octahydrate forms.

Each form is suited to different processing requirements across various sectors. In water treatment, it neutralizes acidic effluents and precipitates heavy metal contaminants, supporting compliance with discharge standards.

Electronics manufacturers use it in the production of strontium-based compounds for cathode ray tube glass and specialty ceramic formulations. It also serves as a precursor in synthesizing strontium salts.

These salts include strontium carbonate and strontium nitrate, which are used in pyrotechnics and optical glass production. Sugar refining has historically used the compound to separate sucrose from molasses.

This process occurs through strontianite precipitation, though this application is now limited. The product is supplied as a white powder or crystalline solid in both anhydrous and octahydrate forms.

Technical grade is the standard commercial specification for industrial and synthesis applications. Packaging typically ranges from small drums to bulk quantities for large-scale manufacturing needs.

Purity levels are commonly specified at 95% or higher depending on end-use requirements. This ensures consistent performance in chemical reactions and industrial processes requiring high-quality alkaline sources.

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Physical Properties

Melting Point 498 °C
Boiling Point 710 °C (decomposes)
Density 3.625
Appearance colourless deliquescent crystals
Color colorless orthorhombic crystals, crystalline; hygroscopic
Odor Odorless
Form colorless orthorhombic crystals
Water Solubility g/100g solution in H2O: 0.90 (0°C), 2.16 ± 0.41 (25°C), 47.71 (100°C); solid phase, Sr(OH)2 · 8H2O [KRU93]
Vapor Pressure 0Pa at 20℃
Refractive Index 1.650
pH 11.27(1 mM solution);12.22(10 mM solution);13.09(100 mM solution)

Safety & Handling (Learn More)

Danger GHS05 GHS07
Hazard Statements
H302 Harmful if swallowed
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P316 Get emergency medical help immediately.
P317 Get emergency medical help.
P321 Specific treatment (see … on this label).
P330 Rinse mouth.
P363 Wash contaminated clothing before reuse.
P405 Store locked up.
P501 Dispose of contents/container in accordance with local regulations.
P264+P265 Wash … thoroughly after handling.
P301+P317 Get emergency medical help.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P301+P330+P331 Rinse mouth. Do NOT induce vomiting.
P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code 28164000
UN Number 3262
ADR Class 8
Packing Group II
Storage Class 8B - Non-combustible corrosive hazardous materials
WGK (Germany) 3

Documentation

Other Names

Sr(OH)2|strontium hydroxide anhydrous|Strontium dihydroxide|Strontium hydroxide (Sr(OH)2)|Strontium hydroxide (Sr(OH)2), octahydrate|EPK818UET5|RefChem:932299

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