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Product Name: USAF K-1861
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18957-54-5

18957-54-5 structure

18957-54-5 structure

Name: USAF K-1861
Chemical Name: 3-cyclohexyl-4,6,6-trimethyl-1H-pyrimidine-2-thione
CAS Number: 18957-54-5
Molecular Formula: C₁₃H₂₂N₂S
Molecular Weight: 238.39200
Create Date: 2017-11-12 18:56:16
Modify Date: 2025-09-05 18:19:03

Name	3-cyclohexyl-4,6,6-trimethyl-1H-pyrimidine-2-thione
Synonyms	1-(Cyclohexyl)-2-thio-4,4,6-trimethyldihydropyrimidine 1-cyclohexyl-4,4,6-trimethyl-3,4-dihydro-1H-pyrimidine-2-thione USAF K-1861 2(1H)-Pyrimidinethione,1-cyclohexyl-3,4-dihydro-4,4,6-trimethyl 1-Cyclohexyl-4,4,6-trimethyl-3,4-dihydro-1H-pyrimidin-2-thion

Density	1.08g/cm3
Boiling Point	315.8ºC at 760 mmHg
Molecular Formula	C₁₃H₂₂N₂S
Molecular Weight	238.39200
Flash Point	144.8ºC
Exact Mass	238.15000
PSA	54.40000
LogP	2.97640
Vapour Pressure	0.000426mmHg at 25°C
Index of Refraction	1.574

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UW1575000

CHEMICAL NAME :: 2(1H)-Pyrimidinethione, 1-cyclohexyl-3,4-dihydro-4,4,6-trimethyl-

CAS REGISTRY NUMBER :: 18957-54-5

BEILSTEIN REFERENCE NO. :: 0171639

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C13-H22-N2-S

MOLECULAR WEIGHT :: 238.43

WISWESSER LINE NOTATION :: T6MYN FHJ BUS C- AL6TJ& D1 F1 F1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 100 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD277-689

HS Code	2933599090

108-91-8 structure

108-91-8

27248-25-5 structure

27248-25-5

~%

18957-54-5 structure

18957-54-5

5055-72-1 structure

5055-72-1

Literature: Mathes et al. Journal of the American Chemical Society, 1948 , vol. 70, p. 1452 Full Text View citing articles Show Details Goodrich Co. Patent: US2491532 , 1946 ;

Precursor 2
108-91-8 27248-25-5
DownStream 0

HS Code	2933599090
Summary	2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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