Tetra-n-butylammonium hydroxide titrant 0.5mol/L

Beijing Huakesheng Fine Chemical Products Trading Co., Ltd. produces and sellsTetra-n-butylammonium hydroxide titrant 0.5mol/L:

Appearance and Characteristics: Water like Solution

Density: 0.995

Melting point: 27-30 ℃ (lit.)

Boiling point: 100 ℃

Flash point: 7 ℃

Refractive index: 1.4

稳定性: Stable under normal temperatures and pressures. Absorbs carbon dioxide from the air.

Storage conditions: The warehouse is ventilated, low-temperature, and dry, and stored separately from acid

Safety information of tetrabutylammonium hydroxide 0.5mol tetrabutylammonium hydroxide titrant

符号: GHS02 GHS05 GHS06 GHS08

Signal word: Danger

Hazard statement: H225; H301 + H311 + H331; H314; H370

Warning statement: P210; P260; P280; P301 + P310; P305 + P351 + P338; P310

Packaging grade: II

Hazard category: 3

Customs code: 2923900090

Dangerous goods transport code: UN 3267 8/PG 2

WGK Germany:1

Hazard category code: R11; R23/24/25; R36/38

Safety instructions: S7-S16-S26-S36/37/39-S45-S36/37-S62

RTECS number: BS5425000

Dangerous goods symbol: C

Calculation of chemical data for tetrabutylammonium hydroxide

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

2. Number of hydrogen bond donors: 1

3. Number of hydrogen bond acceptors: 1

4. Number of rotatable chemical bonds: 12

5. Number of tautomers: None

6. Topological molecular polarity surface area: 1

7. Number of heavy atoms: 18

8. Surface charge: 0

9. Complexity: 116

10. Number of isotopic 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: 2

Synthesis method of tetrabutylammonium hydroxide:

Dissolve 40 grams of tetra-n-butylammonium iodide in 90 milliliters of methanol, add 20 grams of finely powdered pure silver oxide, seal and vigorously shake for 1 hour. Take a few milliliters of the mixture and centrifuge to check for the presence of I -. If it is a positive test, add 2 grams of silver oxide and shake for 30 minutes. If it is a negative test, filter the mixture through a fine sand core funnel, rinse the reaction bottle and funnel with 3 portions of 50 milliliters of dry benzene, and add the washing solution to the filtrate. Blow pure nitrogen for 5 minutes during storage to prevent absorption of water vapor and carbon dioxide.

Ethanol can be used instead of methanol in the above reaction, but tetra-n-butylammonium iodide is more stable in methanol.

Application of tetrabutylammonium hydroxide

Organic strong base. Phase transfer catalyst. [2] Tetra-n-butylammonium hydroxide titrant 0.1mol/L (non-aqueous)

Physicochemical properties

Density: 0.995g/cm3

Melting point: 27-30 ℃

Boiling point: 100 ℃

Flash point: 7 ℃

Refractive index: 1.4

Solubility: soluble in water and polar solvents

Security terminology

S7:Keep container tightly closed.

Store in a strictly sealed container.

S16:Keep away from sources of ignition - No smoking.

Keep away from sources of fire and prohibit smoking.

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Immediately rinse with plenty of water and seek medical advice after eye contact.

S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

Wear appropriate protective clothing, gloves, and eye/face protection.

S45:In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible).

In the event of an accident or feeling unwell, seek medical attention immediately (if possible, show a label).

S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label.

Do not induce vomiting after swallowing: seek medical attention immediately and show the container or.Tetra-n-butylammonium hydroxide titrant 0.5mol/L