BERYLLIUM SULFATE TETRAHYDRATE Property

Melting point:

270℃

Density 

1.713 g/mL at 25 °C(lit.)

solubility 

insoluble in ethanol

form 

Lumps

Specific Gravity

1.713

color 

Colorless, tetragonal crystals

Water Solubility 

Freely soluble in water. Insoluble in alcohol

Merck 

14,1175

Stability:

Stable.

InChIKey

DIMYTQPLZWDZFE-UHFFFAOYSA-L

CAS DataBase Reference

7787-56-6(CAS DataBase Reference)

EPA Substance Registry System

Beryllium monosulfate tetrahydrate (7787-56-6)

Safety

Hazard Codes 

T+,N

Risk Statements 

49-25-26-36/37/38-43-48/23-51/53

Safety Statements 

53-45-61

RIDADR 

UN 1566 6.1/PG 2

WGK Germany 

3

RTECS 

DS5000000

F 

21

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

Toxicity

mma-sat 3300 ng/plate ENMUDM 6(Suppl 2),1,84

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H301Toxic if swalloed

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H330Fatal if inhaled

H335May cause respiratory irritation

H372Causes damage to organs through prolonged or repeated exposure

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

BERYLLIUM SULFATE TETRAHYDRATE Chemical Properties,Usage,Production

Chemical Properties

colourless crystals

Physical properties

Beryllium sulfate is a colorless crystalline solid with a tetragonal crystal system.The tetrahydrate salt loses water of crystallization on heating to about 110°C to form a dihydrate. Upon heating to 400°C, it then forms the anhydrate. Further heating to 550°C causes decomposition of the anhydrate to BeO and SO2 and O2. Beryllium sulfate is soluble in water, tetrahydrate being more soluble in water (30.5 g/100 ml at 30°C) than the anhydrous salt; both are insoluble in alcohol.

Uses

In Industries it is used for beryllium salt making, ceramics and chemical reagents.

Preparation

Beryllium sulfate may be prepared by treating an aqueous solution of any beryllium salt with sulfuric acid, followed by evaporation of the solution and crystallization. The hydrated product may be converted to anhydrous salt by heating at 400°C. The anhydrate may also be prepared by reacting the oxide with SO2 gas at elevated temperature. Its CAS number is 13510-49-1. If the solution method is used, a tetrahydrate forms, (BeOH)2SO4·4H2O whose molecular weight is 177.1462 g/mol with a CAS number of 7787-56-6.
No major commercial application of berylliumsulfate is known and it has not been offered for sale.

Definition

ChEBI: A hydrate of beryllium sulfate containing beryllium (in +2 oxidation state), sulfate and water moieties in the ratio 1:1:4.

General Description

White crystalline solid. Sinks in water and dissolves. Odorless. Highly toxic by inhalation and ingestion.

Air & Water Reactions

Water soluble.

Reactivity Profile

Salts, basic, such as BERYLLIUM SULFATE TETRAHYDRATE are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Incompatible with acids.

Fire Hazard

Literature sources indicate that BERYLLIUM SULFATE TETRAHYDRATE is probably nonflammable.

Safety Profile

Confirmed carcinogen withexperimental carcinogenic data by inhalation. Deadlypoison by subcutaneous and intravenous routes. Humanmutation data reported. When heated todecomposition it emits very toxic fumes of BeO and SOx.

Purification Methods

It crystallises from weak aqueous H2SO4 and is dried in air.