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gptkbp:instance_of
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gptkb:chemical_compound
|
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gptkbp:acidity
|
produces hydrogen sulfide
|
|
gptkbp:appearance
|
white solid
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gptkbp:average_temperature
|
releases sulfur dioxide
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gptkbp:casnumber
|
1313-82-2
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gptkbp:chemical_formula
|
Na2 S
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gptkbp:color
|
white to yellowish
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gptkbp:color_in_solution
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gptkb:yellow
|
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gptkbp:composed_by
|
from sodium hydroxide and sulfur
|
|
gptkbp:dissolved
|
soluble
|
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gptkbp:ec_number
|
215-211-5
|
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gptkbp:ecological_role
|
not essential for life
|
|
gptkbp:engine
|
produced by reacting sodium carbonate with sulfur
|
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gptkbp:environmental_concerns
|
corrosive
toxic
|
|
gptkbp:environmental_impact
|
can be harmful to aquatic life
|
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gptkbp:formation_of_precipitates
|
with copper ions
with lead ions
with mercury ions
with silver ions
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|
https://www.w3.org/2000/01/rdf-schema#label
|
sodium sulfide
|
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gptkbp:ionic_compound
|
gptkb:true
|
|
gptkbp:mass
|
78.04 g/mol
|
|
gptkbp:melting_point
|
1,200 ° C
840 ° C
|
|
gptkbp:neutralization
|
can be neutralized with acids
|
|
gptkbp:oxidation_state_of_sodium
|
+1
|
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gptkbp:oxidation_states
|
-2
|
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gptkbp:p_hlevel
|
alkaline solution
|
|
gptkbp:population_density
|
1.67 g/cm³
|
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gptkbp:reaction_with_heavy_metals
|
forms metal sulfides
|
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gptkbp:related_products
|
sodium thiosulfate
sodium bisulfide
sodium sulfite
|
|
gptkbp:safety_measures
|
use gloves and goggles
|
|
gptkbp:solubility_in_acetone
|
insoluble
|
|
gptkbp:solubility_in_alcohol
|
insoluble
|
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gptkbp:storage
|
store in a cool, dry place
|
|
gptkbp:used_in_agriculture
|
as a soil amendment
|
|
gptkbp:used_in_chemical_synthesis
|
as a reducing agent
|
|
gptkbp:used_in_dyeing
|
as a reducing agent
|
|
gptkbp:used_in_food_processing
|
as a preservative
|
|
gptkbp:used_in_leather_processing
|
for dehairing hides
|
|
gptkbp:used_in_mining
|
for metal extraction
|
|
gptkbp:used_in_oil_drilling
|
as a mud additive
|
|
gptkbp:used_in_pharmaceuticals
|
as a reagent
|
|
gptkbp:used_in_rubber_manufacturing
|
as a vulcanizing agent
|
|
gptkbp:uses
|
gptkb:photography
textile industry
water treatment
pulp and paper industry
|
|
gptkbp:was_a_response_to
|
produces sodium hydroxide and hydrogen sulfide
|
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gptkbp:bfsParent
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gptkb:Lead_Sulfide
|
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gptkbp:bfsLayer
|
5
|