Sodium Hydrosulphide CAS No. 16721-80-5
SPECIFICATION AND USAGE
30 ppm max
used in mining industry as inhibitor , curing agent , removing agent
used in synthetic organic intermediate and preparation of sulfur dye additives .
Used in textile industry as a bleaching, as a desulfurizing and as a dechlorinating agent
used in pulp and paper industry.
used in water treatment as an oxygen scavenger agent.
♦ In the photographic industry to protect developer solutions from oxidation.
♦ It is used in the production of rubber chemicals and other chemical compounds.
♦ It is use in other applications include ore flotation, oil recovery, food preservative, making dyes, and detergent.
Sodium hydrosulfide is the chemical compound with the formula NaHS. This compound is the product of the half-neutralization of hydrogen sulfide (H2S) with sodium hydroxide. NaHS and sodium sulfide are used industrially, often for similar purposes. Solid NaHS is colorless. The solid has an odor H2S owing to hydrolysis by atmospheric moisture. In contrast with sodium sulfide (Na2S), which is insoluble in organic solvents, NaHS, being a 1:1 electrolyte, is more soluble.
HANDLING AND STORAGE
Notice of Handling: Wear proper protective equipment (See Section 8). Avoid breathing product vapors. Avoid contact with skin and eyes. Use only in a well ventilated area. Dilute product only in enclosed containers. Wash thoroughly after handling.
Notice of Storage: Store in well ventilated areas. Do not store combustibles in the area of storage vessels. Keep away from any sources of heat or flame. Store tote and smaller containers out of direct sunlight at moderate temperatures [<80 F (27 C)].
PHYSICAL AND CHEMICAL PROPERTIES
1 APPEARANCE: Yellowish Flake
2 PH value: N/A
3 melting point(℃): about 55
4 relative density (Water=1): 1.79
5 relative steam density ( Water=1): N/A
6 saturation VAPOR PRESSURE (Kpa): N/A
7 critical temperature(℃): N/A
8 critical pressure (mpa): N/A
9 flash point(℃): N/A
10 upper limit of exploding %(v/v): N/A
11 lower limit of exploding %(v/v): N/A
12 burn temperature(℃): N/A
13 resolvable: soluble in water and alcohol
14 main application: dyeing , leather produce, fertilizer, man-made fibre, copper mine. management of waste water.
15 boiling point(℃):about 115
16 Oder : "Rotten egg" oder
STABILITY AND REACTIVITY
1 STABILITY: easily being deliquescent, Melting point decompose out hydrogen sulfide.
2 KEEP AWAY: STRONG ACID , flammable, water, peroxide.
3 AVOID: moist air.
4 outcome of decompounding : hydrogen sulfide of strong toxicity
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