Fumaric acid imatha kugwiritsidwa ntchito ngati chowongolera acidity

Fumaric acid, yomwe imadziwikanso kuti fumaric acid, violet acid kapena lichenic acid, yomwe ndi fumaric acid (IUPAC dzina (E) -butenedioic acid), ndi kristalo wopanda mtundu, woyaka moto wopangidwa ndi Carboxylic acid wotengedwa ku butene. Kuwotcha fumaric acid kumatulutsa utsi wokwiyitsa wa maleic anhydride. Amakoma ngati zipatso ndipo amapezeka ku Corydalis, Boletus, Lichens, ndi Icelandic Nori.

Lumikizanani nafe

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Kufotokozera

Fumaric acid imagwiritsidwa ntchito popanga unsaturated polyester resins. Utomoni wamtunduwu umadziwika ndi kukana kwamankhwala abwino komanso kukana kutentha; copolymer wa fumaric acid ndi vinyl acetate ndi zomatira zabwino. Copolymer yokhala ndi styrene ndiye zopangira zopangira FRP. Plasticizer yopangidwa ndi fumaric acid ndi yopanda poizoni ndipo imatha kugwiritsidwa ntchito ngati vinyl acetate latex pokhudzana ndi chakudya. Izi ndi mankhwala abwino apakatikati monga mankhwala ndi optical bleaching agent. Amagwiritsidwa ntchito popanga antidote dimercaptosuccinic acid m'makampani opanga mankhwala. The fumaric acid imasinthidwa ndi sodium carbonate kuti ipeze sodium fumarate ( [17013-01-3]), kenako m'malo ndi ferrous sulfate kuti ipeze iron fumarate, yomwe imagwiritsidwa ntchito pochiza magazi ochepa a magazi ofiira ndi mankhwala okhala ndi iron. Izi zimagwiritsidwa ntchito ngati chakudya chowonjezera-chowawasa, chomwe chimagwiritsidwa ntchito mu zakumwa zotsitsimula, maswiti a zipatso, odzola, ayisikilimu, ndi zina zotero, zomwe zambiri zimagwiritsidwa ntchito limodzi ndi citric acid wowawasa. Mchere wa monosodium wopangidwa ndi zochita za fumaric acid ndi sodium hydroxide, umagwiritsidwanso ntchito ngati zokometsera zowawasa komanso ngati wapakatikati pakupanga utomoni ndi mordant.

kufotokoza2

Kugwiritsa ntchito

Mu chakudya makamaka ntchito nyama, nsomba mankhwala processing ndi zina zotero. Fumaric acid angagwiritsidwe ntchito ngati acidity regulator, acidifier, antioxidant, salting wolimbikitsa ndi zonunkhira. Izi mankhwala ali amphamvu chotchinga tingati kusunga njira amadzimadzi pafupifupi pH3.0, ndipo ali ndi gawo lofunika kwambiri mu kupewa antibacterial ndi mildew, pa nthawi yomweyo, ali astringent kukoma, ndi mmodzi wa zidulo kwambiri acidic olimba, mlingo otsika mayamwidwe, ndipo kumathandiza kukulitsa alumali moyo wa mankhwala ufa. fumaric acid ikasinthidwa kukhala sodium fumarate, kusungunuka kwamadzi ndi kukoma kumakhala bwino.

Mafotokozedwe azinthu

Dzina lazogulitsa	Fumaric acid
CAS	110-17-8
MF	C4H4O4
MW	116.07
Malingaliro a kampani EINECS	203-743-0
Fumaric acid Chemical Properties	?
Malo osungunuka	298-300 °C (subl.)
Malo otentha	137.07°C (kuyerekeza molakwika)
kachulukidwe	1.62
kuthamanga kwa nthunzi	1.7 mm Hg (165 °C)
Mtengo wa FEMA	2488 \| FUMARIC ACID
refractive index	1.5260 (chiyerekezo)
Fp	230 ° C
kutentha kutentha.	Sungani pansi +30 ° C.
kusungunuka	95% Mowa: sungunuka0.46g/10 mL, zomveka, zopanda mtundu
mawonekedwe	Ufa Wabwino wa Crystalline
pka	3.02, 4.38 (pa 25oC)
mtundu	Choyera
PH	2.1 (4.9g/l, H2O, 20oC)
malire ophulika	40%
Kusungunuka kwamadzi	0.63 g/100 mL (25 oC)
Nambala ya JECFA	618
Merck	144,287
Mtengo wa BRN	605763
Kukhazikika:	Khola kutentha. Imawonongeka pafupifupi 230 C. Zosagwirizana ndi oxidizing amphamvu, zoyambira, zochepetsera. Zoyaka.
InChIKey	VZCYOOQTPOCHFL-OWOJBTEDSA-N
CAS DataBase Reference	110-17-8(CAS DataBase Reference)
NIST Chemistry Reference	Fumaric acid (110-17-8)
EPA Substance Registry System	Fumaric acid (110-17-8)

Zinthu	Miyezo
Kuyesa (%)	≥99.0
Mesh	Kupyolera mu 300 Mesh
AS PPM	≤3
Zitsulo Zolemera (Pb)	≤10
Madzi (%)	≤0.3
Maleic Acid (%)	≤0.1
Mtundu (Pt-Co)	≤15 Hazen
Melting Point(oC)	286-289
Kusungunuka (25oC)	≥1.00g/100ml Madzi