ChemicalBook CAS DataBase List 540-72-7

540-72-7

Name	Sodium thiocyanate
CAS	540-72-7
EINECS(EC#)	208-754-4
Molecular Formula	CNNaS
MDL Number	MFCD00011123
Molecular Weight	81.07
MOL File	540-72-7.mol

Synonyms

SODIUM ISOTHIOCYANATE SODIUM RHODANATE SODIUM RHODANIDE SODIUM SULFACYANIDE SODIUM SULFOCYANATE SODIUM SULFOCYANIDE SODIUM THIOCYANATE THIOCYANIC ACID SODIUM SALT haimased natriumrhodanid scyan sodiumthiocyanatesolution(56%orless) sodiumthiocyanide thiocyanatesodium usafek-t-434 Sodium thiocyanate, 99.99+% metals basis SODIUM THIOCYANATE PURE Sodium thiocyanate 2 M Solution SODIUM THIOCYANATE, REAGENT GRADE, 98-102% SODIUM THIOCYANATE SOLUTION 8M

Chemical Properties

Appearance	white crystalline powder
Melting point	287 °C (dec.) (lit.)
Boiling point	>400°
bulk density	800-1000kg/m3
density	1.295 g/mL at 20 °C
vapor pressure	<1 hPa (20 °C)
refractive index	1.545
storage temp.	2-8°C
solubility	H₂O: 8 M at 20 °C, clear, colorless
form	Solid
color	White
Odor	Odorless
PH	6-8 (100g/l, H2O, 20℃)
Stability:	Stable. Incompatible with acids, strong bases. May decompose on exposure to light. Contact with acid liberates highly toxic gas.
Water Solubility	139 g/100 mL (21 ºC)
Sensitive	Hygroscopic
Merck	14,9327
BRN	3594965
Exposure limits	NIOSH: IDLH 25 mg/m3
Cosmetics Ingredients Functions	HAIR CONDITIONING
InChI	1S/CHNS.Na/c2-1-3;/h3H;/q;+1/p-1
InChIKey	VGTPCRGMBIAPIM-UHFFFAOYSA-M
SMILES	[Na]SC#N
LogP	0.58
CAS DataBase Reference	540-72-7(CAS DataBase Reference)
EPA Substance Registry System	540-72-7(EPA Substance)
Absorption	cut-off at 276nm in H2O at 8M

Safety Data

Symbol(GHS)	GHS05,GHS07
Signal word	Danger
Hazard statements	H302+H312+H332-H318-H412
Precautionary statements	P261-P280-P280-P301+P312+P330-P305+P351+P338+P310
Hazard Codes	Xn
Risk Statements	R32:Contact with acids liberates very toxic gas. R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment . R20/21/22:Harmful by inhalation, in contact with skin and if swallowed . less more
Safety Statements	S36/37:Wear suitable protective clothing and gloves . S61:Avoid release to the environment. Refer to special instructions safety data sheet . S13:Keep away from food, drink and animal feeding stuffs . less more
WGK Germany	1
RTECS	XL2275000
F	3
TSCA	Yes
REACH Registrations	Active
HS Code	28429011
Storage Class	13 - Non Combustible Solids
Hazard Classifications	Acute Tox. 4 Dermal Acute Tox. 4 Inhalation Acute Tox. 4 Oral Aquatic Chronic 3 Eye Dam. 1
Safety Profile	Poison by ingestion, intravenous, and subcutaneous routes. Moderately toxic by intraperitoneal route. Large doses taken internally cause vomiting, convulsions. Chronic poisoning is manifested by weakness, confusion, diarrhea, and skin rashes. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Na2O. See also THIOCYANATES. less more
Toxicity	LD50 orally in rats: 764 mg/kg; i.v. in mice: 484 mg/kg (Anderson, Chen) less more

Raw materials And Preparation Products

Hazard Information

General Description

Odorless white solid. Sinks and mixes with water.

Reactivity Profile

Nitric acid violently oxidized a thiocyanate solution [Bretherick 1979 p. 121]. Caution should be exercised in treating a thiocyanate with an oxidizing agent such as a peroxide or chlorate as such mixtures have been known to explode. Special Hazards of Combustion Products: Irritating oxides of sulfur and nitrogen may form in fire [USCG, 1999]. Carbonyl sulfide is produced in a violent reaction by the mixture of sulfuric acid and SODIUM THIOCYANATE(540-72-7).

Air & Water Reactions

Water soluble.

Health Hazard

Inhalation of dust causes irritation of nose and throat. Ingestion of large doses causes vomiting, extreme cerebral excitement, convulsions, and death in 10-48 hrs.; chronic poisoning can cause flu-like symptoms, skin rashes, weakness, fatigue, vertigo, nausea, vomiting, diarrhea, confusion. Contact with eyes causes irritation. Prolonged contact with skin may produce various skin eruptions, dizziness, cramps, nausea, and mild to severe disturbance of the nervous system.

Fire Hazard

Special Hazards of Combustion Products: Irritating oxides of sulfur and nitrogen may form in fire.

Physical properties

Colorless crystals or white powder; deliquescent; melts at 287°C; very soluble in water; soluble in alcohol.

Definition

ChEBI: An organic sodium salt which is the monosodium salt of thiocyanic acid.

Preparation

Sodium thiocyanate is prepared by boiling an aqueous solution of sodium cyanide with sulfur: NaCN + S → NaSCN.

Reactions

Sodium thiocyanate is an analytical reagent for measuring iodide. Other uses are dyeing and printing textiles, preparing thiocyanate salts, and nickel plating. Used in titrimetry.

Flammability and Explosibility

Nonflammable

Purification Methods

It is recrystallised from EtOH or Me2CO, and the mother liquor is removed from the crystals by centrifugation. It is very deliquescent and should be kept in an oven at 130o before use. It can be dried in a vacuum at 120o/P2O5 [Partington & Winterton Trans Faraday Soc 30 1104 1934]. Its solubility in H2O is 113% at 10o, 178% at 46o, 225.6% at 101.4o; in MeOH 35% at 15.8o, 51% at 48o, 53.5% at 52.3o; in EtOH 18.4% at 18.8o, 24.4% at 70.9o; and in Me2CO 6.85% at 18.8o and 21.4% at 56o [Hughes & Mead J Chem Soc 2282 1929]. Sodium thiocyanate has also been recrystallised from water, acetonitrile or from MeOH using Et2O for washing, then dried at 130o, or dried under vacuum at 60o for 2days. [Strasser et al. J Am Chem Soc 107 789 1985, Szezygiel et al. J Am Chem Soc 91 1252 1987.] (The latter purification removes material reacting with iodine.) Sodium thiocyanate solutions can be freed from traces of iron by repeated batch extractions with Et2O.

Material Safety Data Sheet(MSDS)

Questions And Answer

Spectrum Detail

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540-72-7

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Preparation Products

Hazard Information

General Description

Reactivity Profile

Air & Water Reactions

Health Hazard

Fire Hazard

Physical properties

Definition

Preparation

Reactions

Flammability and Explosibility

Purification Methods

Material Safety Data Sheet(MSDS)

Questions And Answer

Chemical Properties

Uses

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

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