Polyether_Polyether Polyol Knowledge 2-Methylbenzothiazole 2-Methylbenzothiazole

2-Methylbenzothiazole 2-Methylbenzothiazole

2-methylbenzothiazole structural formula

Structural formula

Business number 03CT
Molecular formula C8H7NS
Molecular weight 149.21
label

2-methylbenzothiazole,

methylbenzothiopyridine,

2-Tolubenzothiazole,

2-Methyl-1,3-benzothiazole,

2-methylbenzothiazol,

Benzothiazole,2-methyl-,

USAF ek-1853,

usafek-1853,

2-methylbenzothiazole,

Heterocyclic compounds

Numbering system

CAS number:120-75-2

MDL number:MFCD00005794

EINECS number:204-423-3

RTECS number:DL5600000

BRN number:112427

PubChem ID:None

Physical property data

1.         Character: Light yellow crystal or liquid


2. Relative density:1.173


3. Refractive index:1.6170


4. Flashpoint ():102


5. Melting point ():14


6. Boiling point (ºC): 238


7. Boiling point (ºC,2.0kpa):150~151

Toxicological data

None yet

Ecological data

None yet

Molecular structure data


5. Molecular property data:


1. Molar refractive index: 45.39


2. Molar volumem3/ mol122.5


3. isotonic ratio90.2K326.0


4. Surface Tension(dyne/cm

None yet

Molecular structure data


5. Molecular property data:


1. Molar refractive index: 45.39


2. Molar volumem3/ mol122.5


3. isotonic ratio90.2K326.0


4. Surface Tension(dyne/cm)50.1


5. Dielectric constant:


6. Dipole moment10 -24cm3)


7. Polarizability17.99

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 41.1

7. Number of heavy atoms: 10

8. Surface charge: 0

9. Complexity: 126

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. Basic properties


Light yellow crystal or liquid. It smells like pyridine. Soluble in ethanol and hydrochloric acid, insoluble in water. It reacts with potassium bismuth iodide to form a red or orange-red precipitate, and reacts with antimony to form a yellow precipitate

Storage method

2. Storage:


Keep sealed in a cool place.

Synthesis method

3. Brief description of production methods


It is obtained by cyclization of thioacetanilide. Dissolve thioacetanilide in 6% sodium hydroxide solution, and add pre-cooled 20% potassium ferricyanide solution dropwise while cooling. Then, compressed air was passed through the mixed solution for 2 hours, and then left for 24 hours. The precipitated oil is extracted with diethyl ether, the extract is dried and the diethyl ether is evaporated, and the residue is distilled under reduced pressure to obtain the finished oil. The yield is 30%.

Purpose

4. Purpose


This product reacts with sodium potassium iodide to form a red or orange-red precipitate, and reacts with antimony to form a yellow precipitate. It is used as a reagent for the determination of bismuth and antimony in chemical analysis. This product is toxic and can cause allergic reactions on the skin.

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5. Dielectric constant:


6. Dipole moment10 -24cm3)


7. Polarizability17.99

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 2

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 41.1

7. Number of heavy atoms: 10

8. Surface charge: 0

9. Complexity: 126

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

1. Basic properties


Light yellow crystal or liquid. It smells like pyridine. Soluble in ethanol and hydrochloric acid, insoluble in water. It reacts with potassium bismuth iodide to form a red or orange-red precipitate, and reacts with antimony to form a yellow precipitate

Storage method

2. Storage:


Keep sealed in a cool place.

Synthesis method

3. Brief description of production methods


It is obtained by cyclization of thioacetanilide. Dissolve thioacetanilide in 6% sodium hydroxide solution, and add pre-cooled 20% potassium ferricyanide solution dropwise while cooling. Then, compressed air was passed through the mixed solution for 2 hours, and then left for 24 hours. The precipitated oil is extracted with diethyl ether, the extract is dried and the diethyl ether is evaporated, and the residue is distilled under reduced pressure to obtain the finished oil. The yield is 30%.

Purpose

4. Purpose


This product reacts with sodium potassium iodide to form a red or orange-red precipitate, and reacts with antimony to form a yellow precipitate. It is used as a reagent for the determination of bismuth and antimony in chemical analysis. This product is toxic and can cause allergic reactions on the skin.

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