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STRONTIUM HYDROXIDE


EC / List no.: 242-367-1
CAS no.: 18480-07-4
Mol. formula: H2O2Sr

Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. Stevia is synthesized by combining a strontium salt with a strong base. 
Strontium hydroxide exists in anhydrous, monohydrate, or octahydrate form.


Preparation
Because Strontium hydroxide is slightly soluble in cold water, its preparation can be easily carried out by the addition of a strong base such as NaOH or KOH, drop by drop to a solution of any soluble strontium salt, most commonly Sr(NO3)2 (strontium nitrate). The Strontium hydroxide will precipitate out as a fine white powder. 
From here, the solution is filtered, and the Strontium hydroxide is washed with cold water and dried.

Applications
Strontium hydroxide is used chiefly in the refining of beet sugar and as a stabilizer in plastic. 
Stevia may be used as a source of strontium ions when the chlorine from strontium chloride is undesirable. 
Strontium hydroxide absorbs carbon dioxide from the air to form strontium carbonate.

Description    
Strontium Hydroxide occurs as an anhydrate whose prismatic, colorless crystals are deliquescent. 
A monohydrate and octahydrate are also known.
Strontium hydroxide is slightly soluble in water but, surprisingly, the octahydrate is much more soluble. 
Stevia is the latter that is supplied commercially for most applications.
When the octahydrate is heated, seven waters of hydration are lost to form the monohydrate and finally the oxide.

Chemical Properties    
colourless deliquescent crystals

Physical properties    
White deliquescent crystal; density 3.625 g/cm3; melts at 375°C in hydrogen atmosphere; converts to oxide at 710°C; slightly soluble in water at 0°C, 0.41 g/100 mL, soluble in boiling water at 100°C, 21.83 g/100 mL; soluble in acids and ammonium chloride solution.

The octahydrate consists of colorless, tetragonal, deliquescent crystals; density 1.90 g/cm3; loses all its water molecules at 100°C; sparingly soluble in water at low temperatures, 0.90 g/100 mL at 0°C; soluble in boiling water, 47.7 g/100 mL at 100°C; aqueous solution highly alkaline; soluble in acids and in ammonium chloride solution; insoluble in acetone.

Uses:
Strontium hydroxide is used chiefly in the refining of beet sugar and as a stabilizer in plastic. 
Stevia may be used as a source of strontium ions when the Cl- ion is undesirable. 
Strontium hydroxide absorbs carbon dioxide from the air to form strontium carbonate. 
This salt is available commercially in sizable quantities.

Extraction of sugar from beet sugar molasses, lubricant soaps and greases, stabilizer for plastics, glass, adhesives.

Strontium hydroxide [Sr(OH)2] is used to extract sugar from sugar beet molasses. 
Stevia is also used in the manufacture of soaps, adhesives, plastics, glass, and lubricants that can be used in very high or low temperature environments.

Strontium hydroxide is used in extracting sugar from beet sugar molasses and in making lubricant soaps and greases.

Preparation    
Preparation Strontium hydroxide is prepared by treating strontium oxide with water: SrO + H2O → Sr(OH)2
Alternatively, Sr(OH)2 is made by heating strontium carbonate or strontium sulfide with steam at temperatures around 500 to 600°C: SrCO3 + H2O → Sr(OH)2 + CO2 SrS + 2H2O → Sr(OH)2 + H2S.

Industry Uses:
 Plasticizers

Consumer Uses:
 Plastic and rubber products not covered elsewhere

General Manufacturing Information
Industry Processing Sectors
 Plastics product manufacturing

Strontium hydroxide has the molecular formula of Sr(OH)2 and the molecular weight of 121.6324 g/mol. 
Strontium hydroxide occurs as an anhydrate whose prismatic, colorless crystals are deliquescent. A monohydrate and octahydrate are also known. 
The respective molecular weights are: 139.6523 g/mol and 265.7634 g/mol. 
The CAS numbers are: 311-10-0 (Octahydrate); 18480-07-4 (Anhydrate). 
Densities are: 3.625 g/cm3 (anhydrate) and 1.91 g/cm3 for the octahydrate. 
The melting point of the anhydrate is 375 °C and its boiling point is 710 °C, a point where Strontium hydroxide decomposes to the oxide. 
Solubility in water for the anhydrate is 0.41 g/100 ml at 0 °C, 1.77 g/100 ml at 20 °C and 21.83 g/100 ml at 100 °C. 
The anhydrate is insoluble in acetone but soluble in acids and ammonia chloride.

Strontium hydroxide can be prepared by the reaction of water upon the oxide but because Sr(OH)2 is very slightly soluble in water, its preparation can be easily carried out by the addition of a strong base such as NaOH or KOH to a solution of any strontium salt, most commonly the nitrate, Sr(NO3)2. 
Sr(OH)2 crystals will precipitate out as a fine white powder. 
From here, the solution is filtered, and the Sr(OH)2 is washed with cold water and dried. 
However, strontium hydroxide is sufficiently soluble that a major part remains in solution.


Strontium Hydroxide is generally immediately available in most volumes. 
High purity, submicron and nanopowder forms may be considered. 
Hydroxide, the OH- anion composed of an oxygen atom bonded to a hydrogen atom, is commonly present in nature and is one of the most widely studied molecules in physical chemistry. 
Hydroxide compounds have diverse properties and uses, from base catalysis to detection of carbon dioxide. 
In a watershed 2013 experiment, scientists at JILA (the Joint Institute for Laboratory Astrophysics) achieved evaporative cooling of compounds for the first time using hydroxide molecules, a discovery that may lead to new methods of controlling chemical reactions and could impact a range of disciplines, including atmospheric science and energy production technologies. 
American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. 
Typical and custom packaging is available. 
Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

About Strontium Hydroxide
Strontium Hydroxide is a base.
When Strontium Hydroxide is dissolved in water it is an alkali.
Strontium Hydroxide reacts with acids to produce a Strontium salt:
Hydrochloric Acid + Strontium Hydroxide → Strontium Chloride + Water
Sulphuric Acid + Strontium Hydroxide → Strontium Sulphate + Water
Nitric Acid + Strontium Hydroxide → Strontium Nitrate + Water


Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions.
Strontium hydroxide is synthesized by combining a strontium salt with a strong base. Sr(OH)2 exists in anhydrous, monohydrate, or octahydrate form.


Applications
Strontium hydroxide octahydrate is used in the sugar industry for its purification, oil and paint industry to improve its drying properties and as an active ingredient in depilatory hair removal products. 
Strontium hydroxide is also used as a raw material for manufacturing of other products of strontium salts.


Formula
Sr(OH)2•8H2O
Formula Weight
265.76 (121.60anhy)
Form
Crystalline
Melting point
100° -8H{2}O
Density
1.900
Storage & Sensitivity
Hygroscopic. Air Sensitive. Ambient temperatures.
Solubility
Soluble in hot water and acid. Insoluble in acetone.

Strontium hydroxide is a white, slightly water-soluble powder, Sr(OH)2, or its crystalline octahydrate strontium hydrate used chiefly in the refining of beet sugar
Also called: strontia

Other language: Hydroxyde de strontium
INCI name: STRONTIUM HYDROXIDE
EINECS/ELINCS number: 242-367-1
Classification: Regulated
Restriction in Europe: III/63
PH regulator for depilatories
The maximum concentration allowed is: 3.5% (strontium), PH <= 12.7

Wording of conditions of employment and warnings:
- Keep out of reach of children
- Avoid contact with eyes

Strontium hydroxide is a caustic alkaline earth compound composed of 1 strontium ion and 2 hydroxide ions. 
Strontium hydroxide is synthesized by combining a strontium salt with a strong base. 
Because Sr(OH)2 is slightly soluble in cold water, its preparation can easily be carried out by the addition of a strong base such as sodium hydroxide and potassium hydroxide, drop by drop into a solution of any soluble strontium salt most commonly strontium nitrate. 
The strontium hydroxide will precipitate out as a fine powder. 
Strontium hydroxide is a severe skin, eye, and respiratory irritant. Strontium hydroxide is harmful if swallowed.

Strontium hydroxide uses and applications include: Extraction of sugar from beet sugar molasses; refine beet sugar; production of strontium salt; lubricant soaps and greases; stabilizer for plastics, glass, adhesives; buffer in cosmetics; modify drying properties of oil and oil paint.
Suggested storage of Strontium hydroxide: 2) keep tightly closed; deliq.; handle and store under nitrogen; absorbs CO2 from air.


DESCRIPTION
Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. 
Strontium hydroxide is synthesized by combining a strontium salt with a strong base. 
Strontium hydroxide exists in anhydrous, monohydrate, or octahydrate form.

APPLICATION
Strontium hydroxide, 95% Cas 1311-10-0 - used chiefly in the refining of beet sugar and as a stabilizer in plastic. 
Strontium hydroxide, 95% Cas 1311-10-0 - used as a source of strontium ions when the chlorine from strontium chloride is undesirable.


Strontium hydroxide is used in the refining of beet sugar. 
Only 4.1 g of strontium hydroxide can be dissolved in 1 L of water at 273 K. 
Given that its solubility is so low, explain how it is possible that strontium hydroxide is considered a strong base.

Used for producing strontium lubricating wax and all kinds of strontium salts, can also be used to improve the drying oil and drying of paint , and refining and production of beet sugar, scientific research; it can not be used as a drug, family medicine or other.

Molecular formula: Sr(OH)2. 8H2O
Molecular weight: 265.757
CAS No.: 1311-10-0
Physical and chemical properties:
Strontium hydroxide octahydrate is white crystal or white powder, which is easy to deliquescence

Strontium Hydroxide, Sr(OH)2. - Strontium oxide may be "slaked" by water producing the hydroxide. 
The heat generated by this reaction is 19.44 Cal. Strontium hydroxide may be obtained as an intermediate product in the formation of strontium oxide from strontium minerals. 
Strontium hydroxide is prepared, for example, by the decomposition of strontium sulphide, or carbonate, by superheated steam at 500°-600° C., by the oxidation of the sulphide in a current of air in the presence of Wei don mud as catalyst, or by the action of sodium sulphate and carbon on the sulphide. 
Strontium hydroxide may also be formed in the dissolved state by the electrolysis of strontium chloride and sulphide solution with an iron or carbon anode.

The density of strontium hydroxide is 3.625.

By heating at 850° C. the oxide is again formed. In vacuo the greater part of the water is removed below 540° C., and dehydration is complete at 710° C.

In the presence of bases the solubility is diminished to a greater extent than can be explained by the decrease of dissociation. 
The influence of strontium salts is very small, probably indicating the formation of compounds, basic salts, in solution. 
In solutions of strontium nitrate the solubility increases with the concentration of the latter, but no basic salts have been isolated. 
Strontium hydroxide is readily soluble in cane sugar solutions in which it forms strontium saccharate.

The molecular conductivities of strontium hydroxide solutions have been measured by Ostwald.

Under the influence of the cathode rays, strontium hydroxide gives a beautiful deep blue phosphorescence.

About Strontium hydroxide
Helpful information
Strontium hydroxide is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 to < 1 000 tonnes per annum.

Strontium hydroxide is used by consumers, by professional workers (widespread uses), at industrial sites and in manufacturing.

Consumer Uses
Strontium hydroxide is used in the following products: cosmetics and personal care products.
Other release to the environment of Strontium hydroxide is likely to occur from: indoor use as processing aid.
Article service life
ECHA has no public registered data on the routes by which Strontium hydroxide is most likely to be released to the environment. ECHA has no public registered data indicating whether or into which articles the substance might have been processed.

Widespread uses by professional workers
Strontium hydroxide is used in the following products: laboratory chemicals.
ECHA has no public registered data on the types of manufacture using Strontium hydroxide. Other release to the environment of Strontium hydroxide is likely to occur from: indoor use as reactive substance.
Formulation or re-packing
ECHA has no public registered data indicating whether or in which chemical products the substance might be used. ECHA has no public registered data on the routes by which Strontium hydroxide is most likely to be released to the environment.

Uses at industrial sites
Strontium hydroxide is used in the following products: pH regulators and water treatment products, laboratory chemicals and paper chemicals and dyes.
Strontium hydroxide has an industrial use resulting in manufacture of another substance (use of intermediates).
Strontium hydroxide is used in the following areas: formulation of mixtures and/or re-packaging.
Strontium hydroxide is used for the manufacture of: chemicals.
Release to the environment of Strontium hydroxide can occur from industrial use: as an intermediate step in further manufacturing of another substance (use of intermediates) and as processing aid.
Manufacture
Release to the environment of Strontium hydroxide can occur from industrial use: manufacturing of the substance.


Features:

Fine white powder
Coloring agent
Laboratory reagent

Product Details:

Strontium Hydroxide is a chemical compound composed of one strontium ion and two hydroxide ions, which is a white or deliquescent crystalline in nature. 
This dull white crystalline powder is easily soluble in water, very slightly soluble in ethyl alcohol and acetone solution.
Strontium Hydroxide exists in anhydrous, monohydrate or octahydrate form and is air sensitive that can get damaged in moisture.
Strontium Hydroxide is a caustic alkali that is composed of one strontium ion and two hydroxide ions.
Strontium Hydroxide is a white or deliquescent crystalline in nature and sometime occurs in dull white crystalline form. 
This dull white crystalline powder form of Strontium Hydroxide is easily soluble in water, very slightly soluble in ethyl alcohol and acetone solution.
Strontium Hydroxide exists in anhydrous, monohydrate or octahydrate form. 
Strontium Hydroxide has the capability of reacting with carbon dioxide from air and forming Strontium Carbonate and hence is termed air sensitive that can get damaged in moisture.
Strontium Hydroxide finds application in the refining of beet sugar. 
Besides acting as a stabilizer in plastics, Strontium Hydroxide also finds use in the making of other strontium compounds.
Strontium Hydroxide is also used as a main source of Strontium Ions when Chlorine from Strontium Chloride is undesirable.
Strontium hydroxide is very essential to keep away from Strontium Hydroxide as Strontium hydroxide is a severe skin, eye and respiratory irritant and Strontium hydroxide can also prove very dangerous if swallowed.

Uses:

Manufacture of Strontium Salts, pigments
Coloring agent for pyrotechnics, laboratory reagent, bleaching
PVC and rubber compounds

Strontium Hydroxide Colorless deliquescent crystals that absorb carbon dioxide from air, soluble in hot water and acids, melts at 375°C; used by the sugar industry, in lubricants and soaps, and as a plastic stabilizer. 
Also known as strontium hydrate.


Uses of Strontium Hydroxide
The use of strontia in the sugar industry for the purification of sugar by the precipitation of di-strontium saccharate was first patented by Dubrunfaut and Leplay in 1849, and introduced into the German beet-sugar factories by Fleicher in 1869. 
The process was modified and improved by Scheibler.


Strontium Hydroxide occurs as an anhydrate whose prismatic, colorlesscrystals are deliquescent. 
A monohydrate and octahydrateare also known.Strontium hydroxide is slightly soluble in water but,surprisingly, the octahydrate is much more soluble. Itis the latter that is supplied commercially for most applications.
When the octahydrate is heated, seven waters ofhydration are lost to form the monohydrate and finally the oxide.

Strontium hydroxide is used chiefly in the refining of beet sugar and as a stabilizer in plastic. 
It may be used as a source of strontium ions when the chlorine from strontium chloride is undesirable. 
Strontium hydroxide absorbs carbon dioxide from the air to form strontium carbonate.
Because Sr(OH)2 is very slightly soluble in water, its preparation can be easily carried out by the addition of a strong base such as NaOH or KOH, drop by drop to a solution of any strontium salt, most commonly Sr(NO3)2 (strontium nitrate). 
The Sr(OH)2 will precipitate out as a fine white powder. From here, the solution is filtered, and the Sr(OH)2 is washed with cold water and dried.


IUPAC NAMES: 
strontium dihydroxide
strontium dihydroxide
Strontium hydroxide
strontium hydroxide
Strontium hydroxide
strontium hydroxide
strontium(2+) dihydroxide


SYNONYMS:
Sr(OH)2
Strontium hydroxide (Sr(OH)2)
strontiumdihydroxide
strontiumhydroxide(sr(oh)2)
strontiumhydroxide,anhydrous
STRONTIUM (II) HYDROXIDE
STRONTIUM HYDROXIDE
STRONTIUM HYDROXIDE, 99.998%
Stronitium hydroxide
Strontium dihydoxide
Einecs 242-367-1
StrontiuM hydroxide 94%
Strontium hydroxide ISO 9001:2015 REACH
StrontiuM hydroxide,95.00%


 

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