POTASSIUM HYDROSULFIDE Property

Melting point:

450-510° forming a dark red liquid

Density 

1.70

solubility 

DMSO (Slightly), Methanol (Slightly)

form 

Powder

color 

white to off-white

Water Solubility 

very soluble H2O, alcohol [MER06]

Sensitive 

air sensitive, hygroscopic

Stability:

Air Sensitive, Hygroscopic

CAS DataBase Reference

1310-61-8

EPA Substance Registry System

Potassium sulfide (K(SH)) (1310-61-8)

Safety

RIDADR 

1382

HazardClass 

4.2

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H228Flammable solid

H251Self-heating; may catch fire

H317May cause an allergic skin reaction

H351Suspected of causing cancer

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P201Obtain special instructions before use.

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

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P272Contaminated work clothing should not be allowed out of the workplace.

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

P281Use personal protective equipment as required.

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

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

P314Get medical advice/attention if you feel unwell.

P321Specific treatment (see … on this label).

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P363Wash contaminated clothing before reuse.

P370+P378In case of fire: Use … for extinction.

P405Store locked up.

P501Dispose of contents/container to..…

POTASSIUM HYDROSULFIDE Chemical Properties,Usage,Production

Chemical Properties

White to yellow crystals; hydrogen sul- fide odor. Forms the polysulfide when exposed to air. Hygroscopic; soluble in alco- hol and water.

Uses

Separation of heavy metals.

General Description

POTASSIUM HYDROSULFIDE contains potassium hydrosulfide in solution. POTASSIUM HYDROSULFIDE will have a rotten egg like odor. POTASSIUM HYDROSULFIDE has a pH between 8.5-11.5. POTASSIUM HYDROSULFIDE is a transparent to dark green liquid. Contact with heat or acidic materials will evolve highly toxic hydrogen sulfide. The liquid is highly corrosive to the skin and eyes. Ingestion causes severe burning and corrosion in all portions of the gastrointestinal tract.

Air & Water Reactions

Addition of water to hydrosulfide may drop the pH and allow copious quantities of hydrogen sulfide to be produced. Acid accelerates the H2S production.

Reactivity Profile

Inorganic sulfides are generally basic and therefore incompatible with acids. Many of these compounds are reducing agents and therefore react vigorously with oxidizing agents, including inorganic oxoacids, organic peroxides and epoxides. Simple salts of sulfides (such as sodium, potassium, and ammonium sulfide) react vigorously with acids to release hydrogen sulfide gas

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.