Stannous sulfate Property

Melting point:

360 °C

Density 

4,15 g/cm³

vapor pressure 

0Pa at 20℃

storage temp. 

no restrictions.

form 

Solid

Specific Gravity

1.35

color 

White to off-white

PH

1.6 (50g/l, H2O, 20℃)

Water Solubility 

330 g/L (20 ºC)

Merck 

14,8790

Exposure limits

ACGIH: TWA 2 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 2 mg/m3

Stability:

Stable, but moisture sensitive. Incompatible with strong oxidizing agents.

CAS DataBase Reference

7488-55-3(CAS DataBase Reference)

EPA Substance Registry System

Sulfuric acid, tin(2+) salt (1:1) (7488-55-3)

Safety

Hazard Codes 

Xi,N,Xn

Risk Statements 

36/37/38-36/37-68-50/53-48/22-43-20

Safety Statements 

26-36-39-61-60-45-37-53

RTECS 

WT1255000

TSCA 

Yes

HS Code 

28332990

Toxicity

LD50 orally in Rabbit: 2207 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H290May be corrosive to metals

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

H341Suspected of causing genetic defects

H373May cause damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

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.

P308+P313IF exposed or concerned: Get medical advice/attention.

Stannous sulfate Chemical Properties,Usage,Production

Uses

Stannous sulfate is the sulfate salt of stannous. Study has shown that it can be mixed with gypsum to make a retarder in grinding portal cement and blended hydraulic cement, which can improve the quality of the cement, mortar and concrete. It can also be used as the reducing agent during the determination of mercury, cobalt and nickel through atomic absorption spectrophotometry. It can also be used as an electrolyte additive to be supplemented to the battery. This could have a positive effect on restraining larger particles of irreversible sulfation in charge-discharge cycles of battery testing.

Description

Stannous Sulfate is a white to slightly yellow, heavy crystalline powder. When dissolved in a 5% Sulfuric Acid Solution, a clear solution is obtained. Gradual hydrolysis occurs over a period of time with the formation of insoluble tin compounds.
Stannous Sulfate is commonly used in acid tin plating baths, liquor finishing and drawing of steel wire. It delivers a high current efficiency and smooth, fine grained deposits. A bright finish can be obtained by flow melting of through the use of certain additives.

References

Yue, Sing Tsze. "Stannous sulfate and gypsum mixture as a retarder in grinding portland cement and blended hydraulic cement for improving the quality of the cement, mortar and concrete." U.S. Patent No. 4,011,092. 8 Mar. 1977. Hatch, W. Ronald, and Welland L. Ott. "Determination of submicrogram quantities of mercury by atomic absorption spectrophotometry." Analytical Chemistry 40.14 (1968): 2085-2087. Wang, Qin, et al. "Stannous sulfate as an electrolyte additive for lead acid battery made from a novel ultrafine leady oxide." Journal of Power Sources 285(2015): 485-492.

Chemical Properties

off-white solid

Uses

It is used in tin plating baths and it is a precursor for tin metal.

Uses

In tin plating; preparation of stannous salts.

Hazard

Toxic material.

Flammability and Explosibility

Non flammable