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| CAS No.: | 16721-80-5 |
|---|---|
| Name: | Sodium hydrosulfide |
| Molecular Structure: | |
|
|
|
| Formula: | NaHS |
| Molecular Weight: | 56.0637 |
| Synonyms: | Sodiumsulfide (Na(HS)) (8CI);Hydrogen sodium sulfide;Hydrogen sodium sulfide(HNaS);NSC 158264;Sodium bisulfide;Sodium hydrogen sulfide;Sodium hydrogensulfide (NaHS);Sodium hydrosulfide (Na(HS));Sodiummercaptan;Sodium mercaptide;Sodium sulfhydrate;sodium hydrosulphide; |
| EINECS: | 240-778-0 |
| Density: | 1.79 g/cm3 |
| Melting Point: | 55 °C |
| Flash Point: | 90 °C |
| Solubility: | water: 620 g/L (20 °C) |
| Appearance: | white crystals or powder with a very unpleasant smell |
| Hazard Symbols: |
 C, F
|
| Risk Codes: | 31-34 |
| Safety: | 25-36/37/39-45-50A |
| Transport Information: | UN 2318/1385/2949 |
| PSA: | 38.80000 |
| LogP: | 0.38050 |
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Chemistry
IUPAC Name: Sodium sulfanide
Synonyms of Sodium hydrosulfide (CAS NO.16721-80-5): Sodium sulfide (Na(HS)) (8CI) ; Sodium sulfide (Na(SH)) ; NA2922 ; Sodium hydrosulfide ; Sodium hydrosulfide solution ; Sodium hydrosulfide solution (45% or less) ; Sodium hydrosulfide, solution ; Sodium hydrosulfide, solution [NA2922] [Corrosive] ; Sodium hydrosulfide, with <25% water of crystallization ; Sodium hydrosulfide, with <25% water of crystallization [UN2318] [Spontaneously combustible] ; Sodium hydrosulfide, with not <25% water of crystallization ; Sodium hydrosulfide, with not <25% water of crystallization [UN2949] [Corrosive] ; Sodium sulfide ; UN2318 ; UN2949
CAS NO: 16721-80-5
Classification Code: Mutation data
Molecular Formula of Sodium hydrosulfide (CAS NO.16721-80-5): HNaS
Molecular Weight: 56.0627
Molecular Structure:
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Melting Point of Sodium hydrosulfide (CAS NO.16721-80-5): 55°C
Freely Rotating Bonds: 1
Polar Surface Area: 38.8 Å2
SMILES: [Na]S
InChI: InChI=1/Na.H2S/h;1H2/q+1;/p-1/rHNaS/c1-2/h2H
InChIKey: HYHCSLBZRBJJCH-AWLWQTOKAZ
Std. InChI: InChI=1S/Na.H2S/h;1H2/q+1;/p-1
Std. InChIKey: HYHCSLBZRBJJCH-UHFFFAOYSA-M
Uses
Sodium hydrosulfide (CAS NO.16721-80-5) is a useful reagent for the synthesis of organic and inorganic sulfur compounds.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | intraperitoneal | 18mg/kg (18mg/kg) | BEHAVIORAL: COMA | Drug and Chemical Toxicology. Vol. 1, Pg. 327, 1978. |
| mouse | LD50 | subcutaneous | 200mg/kg (200mg/kg) | PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE) LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | Japanese Journal of Pharmacology. Vol. 3, Pg. 99, 1954. |
| rat | LD50 | intraperitoneal | 14600ug/kg (14.6mg/kg) | Biochemical Pharmacology. Vol. 38, Pg. 973, 1989. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes: 
C,
F
Risk Statements: 31-34
R31: Contact with acids liberates toxic gas.
R34: Causes burns.
Safety Statements: 25-36/37/39-45-50
S25: Avoid contact with eyes.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S50: Do not mix with ...
RIDADR: 2318
HazardClass: 4.2
PackingGroup: II
Hazardous Substances Data: 16721-80-5(Hazardous Substances Data)
Poison by intraperitoneal and subcutaneous routes. Mutation data reported. A corrosive irritant to skin, eyes, and mucous membranes. Flammable when exposed to heat or flame. Spontaneous combustion. Reacts violently with diazonium salts. Readily yields H2S. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFIDES and MERCAPTANS.
Standards and Recommendations
DOT Classification: 8; Label: Corrosive, Poison (NA 2922); DOT Class: 4.2; Label: Spontaneously Combustible (UN 2318); DOT Class: 8; Label: Corrosive (UN 2949)