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16738-19-5

16738-19-5 structure
16738-19-5 structure

Name (2,5-dimethylphenyl)thiourea
Synonyms Urea,2-thio-1-(2,5-xylyl)
1-(2,5-dimethylphenyl)-2-thiourea
N-(2,5-Dimethylphenyl)-thioharnstoff
(2,5-Dimethyl-phenyl)-thioharnstoff
(2,5-Xylyl) thiourea
2-Thio-1-(2,5-xylyl)urea
(2,5-Dimethyl-phenyl)-thiourea
Density 1.2g/cm3
Boiling Point 288.2ºC at 760mmHg
Melting Point 135℃
Molecular Formula C9H12N2S
Molecular Weight 180.27000
Flash Point 128.1ºC
Exact Mass 180.07200
PSA 70.14000
LogP 2.73220
Vapour Pressure 0.00237mmHg at 25°C
Index of Refraction 1.674
Material Safety Data Sheet

Section1. Identification of the substance
Product Name: (2,5-Dimethyl-phenyl)-thiourea
Synonyms:

Section2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

Section3. Composition/information on ingredients.
Ingredient name:(2,5-Dimethyl-phenyl)-thiourea
CAS number:16738-19-5

Section4. First aid measures
Skin contact:Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact:Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
attention.
Inhalation:Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion:Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

Section5. Fire fighting measures
In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

Section6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution:Wear approved mask/respirator
Hand precaution:Wear suitable gloves/gauntlets
Skin protection:Wear suitable protective clothing
Eye protection:Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

Section7. Handling and storage
Handling:This product should be handled only by, or under the close supervision of, those properly qualified
in the handling and use of potentially hazardous chemicals, who should take into account the fire,
health and chemical hazard data given on this sheet.
Store in closed vessels.
Storage:

Section8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

Section9. Physical and chemical properties
Appearance:Not specified
Boiling point:No data
No data
Melting point:
Flash point:No data
Density:No data
Molecular formula:C9H12N2S
Molecular weight:180.3

Section10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, nitrogen oxides, sulfur oxides.

Section11. Toxicological information
No data.

Section12. Ecological information
No data.

Section13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

Section14. Transportation information
Non-harzardous for air and ground transportation.

Section15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.


SECTION 16 - ADDITIONAL INFORMATION
N/A

CHEMICAL IDENTIFICATION

RTECS NUMBER :
YU3850000
CHEMICAL NAME :
Urea, 2-thio-1-(2,5-xylyl)-
CAS REGISTRY NUMBER :
16738-19-5
BEILSTEIN REFERENCE NO. :
2092332
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C9-H12-N2-S
MOLECULAR WEIGHT :
180.29
WISWESSER LINE NOTATION :
SUYZMR B1 E1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
50 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. (Washington, DC) Volume(issue)/page/year: 5,46,1953

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16738-19-5 structure

16738-19-5

Literature: Dyson; George Journal of the Chemical Society, 1924 , vol. 125, p. 1704 Full Text Show Details Dyson; Hunter Journal of the Society of Chemical Industry, London, 1926 , vol. 45, p. 84 T Chem. Zentralbl., 1926 , vol. 97, # I p. 3139 Full Text Show Details Dains et al. Journal of the American Chemical Society, 1925 , vol. 47, p. 1983 Journal of the American Chemical Society, 1922 , vol. 44, p. 2639

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16738-19-5 structure

16738-19-5

Literature: Dains et al. Journal of the American Chemical Society, 1925 , vol. 47, p. 1983 Journal of the American Chemical Society, 1922 , vol. 44, p. 2639

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16738-19-5 structure

16738-19-5

Literature: Pascal; Pinhas; Laure; Dumez; Poizot European Journal of Medicinal Chemistry, 1990 , vol. 25, # 1 p. 81 - 85

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16738-19-5 structure

16738-19-5

Literature: Dyson; George Journal of the Chemical Society, 1924 , vol. 125, p. 1704

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16738-19-5 structure

16738-19-5

Literature: Kajino; Mizuno; Tawada; Shibouta; Nishikawa; Meguro Chemical and Pharmaceutical Bulletin, 1991 , vol. 39, # 11 p. 2888 - 2895