SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Benzyl Benzoate: Benzaldehyde and Sodium Benzylate
Charlie

Imeundwa na

Charlie

18. Oktoba 2026DE
5
0
0
0
0

Benzyl Benzoate: Benzaldehyde and Sodium Benzylate

Benzyl benzoate is an oily ester that dissolves PVC when hot and softens it. Kamm (Organic Syntheses, 1921): a little sodium dissolved in benzyl alcohol turns two molecules of benzaldehyde into one of benzyl benzoate. Keep it below 50 to 60 °C as it mixes, or it overheats into benzyl ether. 454 g of benzaldehyde give 410 to 420 g. Sodium metal burns in water: keep it dry. The picture: our own drawing.
Juu
1 day

Maagizo

1

Dissolve the sodium in benzyl alcohol

Goggles and gloves on. Warm 3 g of sodium in 70 g of pure benzyl alcohol for half an hour until it dissolves. Let it cool to room temperature.

Zana zinazohitajika:

SodiamuSodiamu
Pombe ya BenziliPombe ya Benzili
Chupa yenye chini cha mviringoChupa yenye chini cha mviringo
Sufuria kubwa (ya chini, kwa maji ya moto)Sufuria kubwa (ya chini, kwa maji ya moto)
Mizani ya mizani-mbiliMizani ya mizani-mbili
Glavu za mpiraGlavu za mpira
Miwani ya kinga dhidi ya kemikaliMiwani ya kinga dhidi ya kemikali
2

Add it to the benzaldehyde, cool

Add the solution little by little to 454 g of benzaldehyde, mixing well. Cool if needed to keep it just below 50 to 60 °C. It sets to a pasty jelly.

Vifaa kwa hatua hii:

BenzaldehaidiBenzaldehaidi454 g

Zana zinazohitajika:

Chupa yenye chini cha mviringoChupa yenye chini cha mviringo
KipimajotoKipimajoto
Sufuria kubwa (ya chini, kwa maji ya moto)Sufuria kubwa (ya chini, kwa maji ya moto)
3

Warm on the water bath

When the temperature stops rising, after about half an hour, warm it on the water bath for one to two hours, shaking now and then.

Zana zinazohitajika:

Sufuria kubwa (ya chini, kwa maji ya moto)Sufuria kubwa (ya chini, kwa maji ya moto)
Chupa yenye chini cha mviringoChupa yenye chini cha mviringo
4

Wash

Cool, add 200 ml of water and separate the oil. Wash it once more with water.

Zana zinazohitajika:

MajiMaji
Faneli ya kutenganishaFaneli ya kutenganisha
5

Distil under vacuum

Distil under vacuum. Benzyl alcohol, leftover aldehyde and water come first. When the temperature jumps, change the receiver: benzyl benzoate boils at 184 to 185 °C at 15 mm. Expect 410 to 420 g.

Zana zinazohitajika:

Chupa ya Kioo ya KunerekaChupa ya Kioo ya Kunereka
Koili ya kifidishajiKoili ya kifidishaji
Pampu ya utupuPampu ya utupu
KipimajotoKipimajoto
Chupa za kioo zenye viziboChupa za kioo zenye vizibo

Vifaa

1

Zana Zinazohitajika

14

Mchoro huu unatengeneza

Thumbnail
Kishikilia nafasi

Benzili Benzoeti

Free

3
0
1

Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Benzaldehyde: Oil of Bitter Almonds by Steam Distillation
Hatari

Benzaldehyde: Oil of Bitter Almonds by Steam Distillation

na CharlieDE

Kikaboni

4
0
0
0
0
0

CC0 Umma Wote

Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.

Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.

Majadiliano

(0)

Ingia kujiunga na majadiliano

Inapakia maoni...