SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Hatari
Extruded Polystyrene Foam: Methyl and Methylene Chloride Gel Let Out at 80 °C (McIntire, Dow 1948, Ex. 2)
Extruded polystyrene foam blown with a mix of methyl chloride and methylene chloride. Polystyrene soaks up both under pressure at 60 °C into a gel. The gel is heated to 80 °C and let out through the bottom valve, where it swells into foam. The flow was fairly rapid and the cells smaller than at 60 °C, but the foam shrank a little. McIntire found that a hotter gel gives finer cells, because the heat boils off all the chlorides. Methyl chloride is a toxic, flammable gas.
Source: O. R. McIntire (Dow), US 2,450,436 (1948), Example 2. Picture: the patent's drawing.
Juu
3 days
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
IngiaMchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
Hatari
Extruded Polystyrene Foam Board: Polystyrene Swollen with Methyl Chloride and Let Out below 130 °C
na Charlie
Viwandani
8
0
0
0
0
0
Hatari
Dichloromethane: Chloroform Reduced with Zinc, Alcohol and Hydrochloric Acid (Greene, in Thorpe 1912)
na Charlie
Viwandani
6
0
0
0
0
0
Hatari
Methyl Chloride: Hydrogen Chloride into Boiling Methanol over Zinc Chloride, Groves 1874
na Charlie
Kikaboni
12
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.