Phenylthiourea

Description

Phenylthiourea · CAS 103-85-5 · C7H8N2S. UNII 6F82C6Q54C. Melting Point: 298.4 °F (EPA, 1998); Melting Point: 154 °C; Solubility: In water, 2.47X10+3 mg/L at 25 °C.

Identification

CAS Registry Number	103-85-5
PubChem CID	676454
Molecular formula	C7H8N2S
IUPAC name	phenylthiourea
UNII (FDA)	6F82C6Q54C

Computed Descriptors

Molecular Weight	152.22
XLogP3	0.7
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	1
Exact Mass	152.04081944
Monoisotopic Mass	152.04081944
Topological Polar Surface Area	70.1
Heavy Atom Count	10
Formal Charge	0

Physical & Chemical Properties

Melting Point	298.4 °F (EPA, 1998)
Melting Point	154 °C
Solubility	In water, 2.47X10+3 mg/L at 25 °C
Density	1.3
Density	1.3 @25 °C
Vapor Pressure	0.00209 [mmHg]
LogP	log Kow = 0.71
LogP	0.73

Physical description & handling notes

• Needle-like crystals. Used in the manufacture of rodenticides and in medical genetics. (EPA, 1998)
• Solid; [Merck Index] White or light brown powder; [Alfa Aesar MSDS]
• Needles from water; prisms from alcohol
• Needles
• Bitter or tasteless ... depending upon heredity of taster
• Taste threshold (detection in water): 2.00X10-5 moles/L; 2.03X10+1 mg/L; (recognition in water): 3.10X10-4 g/100 mL water

Regulatory Status

GHS notification summary	3.8% (3 / 78)

GHS Hazard Classification

GHS notification summary	3.8% (3 / 78)
Reported hazard statements	H300 (94.9%), H317 (89.7%)

Documented Uses

• Used to make rodenticides, as repellant for rats, rabbits, and weasels, and in medical genetics; [HSDB]
• Prepared by evaporating an aqueous solution of aniline hydrochloride and ammonium thiocyanate and carefully heating the residue.
• (1975) PROBABLY GREATER THAN 4.54X10+5 GRAMS
• (1976) 1.03X10+6 GRAMS (PRINCPL CUSTMS DISTS)
• (1978) 1.00X10+6 GRAMS (PRINCPL CUSTMS DISTS)
• Phenylthiourea is a repellent for rats, rabbits, and weasels. Effective concn are 0.012-0.014%, & can be lowered to 0.002-0.003% by addition of 5% sucrose.

Synonyms

Phenylthiourea; 1-Phenylthiourea; N-Phenylthiourea; 103-85-5; 1-PHENYL-2-THIOUREA; Phenylthiocarbamide; Thiourea, phenyl-; Urea, 1-phenyl-2-thio-; Fenylthiomocovina; alpha-Phenylthiourea; USAF EK-1569; NCI-C02017; monophenyl thiourea; DTXSID9021134; U 6324; 6F82C6Q54C

Frequently Asked Questions

What are the CAS number and molecular formula of Phenylthiourea?

CAS 103-85-5; molecular formula C7H8N2S; molecular weight — g/mol.

What other names is Phenylthiourea known by?

Phenylthiourea, 1-Phenylthiourea, N-Phenylthiourea, 103-85-5, 1-PHENYL-2-THIOUREA, Phenylthiocarbamide.

Is Phenylthiourea classified as hazardous?

3.8% of GHS notifications report no hazard classification (3 of 78).

What are the key physical properties of Phenylthiourea?

Melting Point: 298.4 °F (EPA, 1998); Melting Point: 154 °C; Solubility: In water, 2.47X10+3 mg/L at 25 °C; Density: 1.3.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.