2,4(1H,3H)-Pyrimidinedione,5-methyl- cas no:65-71-4

Name2,4(1H,3H)-Pyrimidinedione,5-methyl-
CAS65-71-4
SynonymsThymine(8CI); 2,4-Dihydroxy-5-methylpyrimidine; 4-Hydroxy-5-methylpyrimidin-2(1H)-one;5-Methyl-1,2,3,4-tetrahydropyrimidine-2,4-dione;5-Methyl-2,4(1H,3H)-pyrimidinedione; 5-Methyl-2,4-dihydroxypyrimidine;5-Methylpyrimidine-2,4-dione; 5-Methyluracil; NSC 14705; NSC 168663
EINECS(EC#)200-616-1
Molecular FormulaC5H6 N2 O2
Molecular Weight126.11334

Appearancefine off-white crystalline powder
refractive index1.489
storage tempStore at RT.

Hazard UN NO.
Risk R36/37/38
Safety Hazard Codes:Xi
Risk Statements:36-36/37/38
36:Irritating to the eyes
36/37/38:Irritating to eyes, respiratory system and skin
Safety Statements:22-24/25-37/39-26
22:Do not breathe dust
24/25:Avoid contact with skin and eyes
37/39:Wear suitable protective clothing, gloves and eye/face protection
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
WGK Germany:2

CHEMICAL IDENTIFICATION

RTECS NUMBER :

XP2100000

CHEMICAL NAME :

Thymine

CAS REGISTRY NUMBER :

65-71-4

LAST UPDATED :

199707

DATA ITEMS CITED :

6

MOLECULAR FORMULA :

C5-H6-N2-O2

MOLECULAR WEIGHT :

126.13

WISWESSER LINE NOTATION :

T6N CNJ BQ DQ E1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

3500 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :

Phage inhibition capacity

TEST SYSTEM :

Bacteria - Escherichia coli

DOSE/DURATION :

1 gm/L

REFERENCE :

ZAPOAK Zeitschrift fuer Allgemeine Mikrobiologie. (Akademie-Verlag GmbH, Postfach 1233, Berlin DDR-1086 Ger. Dem. Rep.) V.1- 1960- Volume(issue)/page/year: 12,583,1972 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7246 No. of Facilities: 437 (estimated) No. of Industries: 2 No. of Occupations: 8 No. of Employees: 4219 (estimated) No. of Female Employees: 2161 (estimated)