Isobutters?ure
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Isobutters?ure Eigenschaften
- Schmelzpunkt:
- -47 °C (lit.)
- Siedepunkt:
- 153-154 °C (lit.)
- Dichte
- 0.95 g/mL at 25 °C (lit.)
- Dampfdichte
- 3.04 (vs air)
- Dampfdruck
- 1.5 mm Hg ( 20 °C)
- Brechungsindex
- n
20/D 1.393(lit.)
- Flammpunkt:
- 132 °F
- storage temp.
- Store below +30°C.
- L?slichkeit
- 618g/l
- Aggregatzustand
- Liquid
- pka
- 4.84(at 20℃)
- Farbe
- Clear colorless
- PH
- 3.96(1 mM solution);3.44(10 mM solution);2.93(100 mM solution);
- Geruch (Odor)
- at 1.00 % in propylene glycol. acidic sour cheese dairy buttery rancid
- Geruchsart
- acidic
- Biologische Quelle
- synthetic
- Explosionsgrenze
- 1.6-7.3%(V)
- Odor Threshold
- 0.0015ppm
- Wasserl?slichkeit
- 210 g/L (20 ºC)
- Merck
- 14,5155
- JECFA Number
- 253
- BRN
- 635770
- Dielectric constant
- 2.6(Ambient)
- InChIKey
- KQNPFQTWMSNSAP-UHFFFAOYSA-N
- LogP
- 1.1 at 25℃
- CAS Datenbank
- 79-31-2(CAS DataBase Reference)
- NIST chemische Informationen
- Propanoic acid, 2-methyl-(79-31-2)
- EPA chemische Informationen
- Isobutyric acid (79-31-2)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | Xn | ||
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R-S?tze: | 21/22 | ||
S-S?tze: | 23-36/37/39-24/25 | ||
RIDADR | UN 2529 3/PG 3 | ||
WGK Germany | 1 | ||
RTECS-Nr. | NQ4375000 | ||
F | 13 | ||
Selbstentzündungstemperatur | 824 °F | ||
TSCA | Yes | ||
HazardClass | 3 | ||
PackingGroup | III | ||
HS Code | 29156000 | ||
Giftige Stoffe Daten | 79-31-2(Hazardous Substances Data) | ||
Toxizit?t | LD50 orally in Rabbit: 266 mg/kg LD50 dermal Rabbit 475 mg/kg |
Bildanzeige (GHS) |
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Isobutters?ure Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.PHYSIKALISCHE GEFAHREN
Die D?mpfe sind schwerer als Luft.CHEMISCHE GEFAHREN
Schwache S?ure.ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation, über die Haut und durch Verschlucken.INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitssch?dliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:Die Substanz ver?tzt die Augen, die Haut und die Atemwege. ?tzend beim Verschlucken.
LECKAGE
Zündquellen entfernen. Ausgelaufene Flüssigkeit in abgedeckten Beh?ltern sammeln. Verschüttete Flüssigkeit mit viel Wasser wegspülen.R-S?tze Betriebsanweisung:
R21/22:Gesundheitssch?dlich bei Berührung mit der Haut und beim Verschlucken.S-S?tze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
Isobutyric acid is a clear colorless oily liquid with an odor and flavor similar to n-butyric acid. Miscible with water, soluble in ethanol and ether. Prepared via oxidation of isobutyl alcohol.Physikalische Eigenschaften
Isobutyric Acid is a flavoring agent that is a colorless liquid with a strong, penetrating odor, resembling butter. it is miscible in alcohol, propylene glycol, glycerin, mineral oil, and most fixed oils and soluble in water. it is obtained by chemical synthesis. it is also termed isopropylformic acid.Occurrence
Isobutyric acid occurs naturally in Ceratonia siliqua L. The gum obtained from the kernels of this species is used as a thickener in the food industry. Reported found in several essential oils: Arnica montana, Roman chamomile, Laurus nobilis, imperatoria, and in carob fruits (Siliqua dulcis); also identified in the essence of Seseli tortuosum, Artemisia transiliensis.synthetische
Isobutyric acid is prepared in a similar way to butyric acid, mainly by direct oxidation of isobutanol and isobutyraldehyde, which is obtained by a direct oxidation reaction with air or oxygen.Definition
ChEBI: Isobutyric acid is a branched fatty acid comprising propanoic acid carrying a methyl branch at C-2. It has a role as a volatile oil component, a plant metabolite and a Daphnia magna metabolite. It is a branched-chain saturated fatty acid, a methyl-branched fatty acid and a fatty acid 4:0. It is a conjugate acid of an isobutyrate.Application
Isobutyric acid is mainly used in the synthesis of isobutyric acid esters, such as methyl isobutyrate, propyl ester, isoamyl ester and benzyl ester. It can also be used manufacture of esters for solvents, flavors and perfume bases, disinfecting agent, varnish, plasticizers, deliming hides, tanning agent and used in pharmaceutical. Isobutyric acid has some important derivatives that, in the industry, is actually used for the production of isobutyronitrile intermediates, and then converted to isobutylamidine hydrochloride that is the raw materials of pesticide diazinon.Allgemeine Beschreibung
Isobutyric acid appears as a colorless liquid with a light odor of rancid butter. Flash point 132°F. Density 7.9 lb / gal. Corrosive to metals and tissue.Air & Water Reaktionen
Flammable. Water solubleReaktivit?t anzeigen
Isobutyric acid corrodes aluminum and other metals. Flammable hydrogen gas may accumulate in enclosed spaces in which this reaction has taken place [USCG, 1999].Hazard
Toxic by ingestion, strong irritant to tissue.Health Hazard
Inhalation causes irritation of nose and throat. Ingestion causes irritation of mouth and stomach. Contact with eyes or skin causes irritation.Brandgefahr
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.Synthese
The preparation of isobutyric acid is similar with butyric acid, which is performed by the direct oxidation of isobutyl alcohol and isobutyraldehyde. Isobutyric acid can be directly generated from the oxidation of isobutyraldehyde in air or oxygen. Other manufacturing methods have isobutyronitrile hydrolysis and methacrylic acid hydrogenation. The oxidation of 2-methyl-1-nitropropane to prepare isobutyric acid can also obtain a higher yield. The purification of Isobutyric acid can be realized by azeotropic distillation with water, and anhydrous isobutyric acid can be obtained by the extractive distillation from carbon tetrachloride. Propylene and formic acid ester can react at 50 °C with the catalysis of hydrofluoric acid to generate methyl isobutyrate and propyl isobutyrate.l?uterung methode
Distil the acid from KMnO4, then redistil it from P2O5. [Beilstein 2 H 288, 2 I 126, 2 II 257, 2 III 637, 2 IV 843.]Isobutters?ure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Propyl-3,4,5-trihydroxybenzoat
Hydrazinium hydroxide solution
Octylisobutyrat
Isobutanol
Buttersure
1-Nitropropan
Methylisobutyrat
Propyl isobutyrate
BUTYRAMIDINE
3-Methylbutylisobutyrat
Tetrachlormethan
Benzylisobutyrat
AROMA
(-)-MENTHYL CHLOROFORMATE
Diazinon (ISO)
Isobutyraldehyd
Fluorwasserstoff
Methacrylsure
Isobutyronitril
Downstream Produkte
Ethyl-3,3-dimethylpent-4-en-1-oat
Butylisobutyrat
Hexyl isobutyrate
Phenethylisobutyrat
Isobutylformiat
Octylisobutyrat
HEPTYL ISOBUTYRATE
2-(4-Ethoxyphenyl)-2-methylpropanol
Methylisobutyrat
ethyl 4,6,6-trichloro-3,3-dimethyl-hex-5-enoate
Cinnamylisobutyrat
tert-Butylperoxypivalat
Ethyl-2-brom-2-methylpropionat
Captopril
Benzylisobutyrat
Ethyl 2-(2-aminothiazole-4-yl)-2-(1-tert-butoxycarbonyl-1-methylethoxyimino)acetate
p-Tolylisobutyrat
Isobutters?ureanhydrid
3-Phenoxybenzyl-3-(2,2-dichlorvi-nyl)-2,2-dimethyl-cyclopropancar-boxylat
Isobutyramid
3,7-Dimethyloct-6-enylisobutyrat
4-(3-ISOPROPYL-1,2,4-OXADIAZOL-5-YL)PIPERIDINE
2-Brom-2-methylpropionylbromid
Etofenprox
Isobutyrylchlorid
Ethylisobutyrat
Gemfibrozil
2-Phenoxyethylisobutyrat
Isobutters?ure Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 503)Lieferanten
Firmenname | Telefon | Land | Produktkatalog | Edge Rate | |
---|---|---|---|---|---|
Yixing Wencheng Chemical Co., Ltd | +86-0510-87501824 +86-13961572207 |
David@un-wencheng.com | China | 137 | 58 |
Hebei Chuanghai Biotechnology Co., Ltd | +86-15531157085; +8615531157085 |
abby@chuanghaibio.com | China | 8807 | 58 |
Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 |
sales1@chuanghaibio.com | China | 5857 | 58 |
Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 |
info@dakenam.com | China | 19919 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21628 | 55 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +8618949832763 |
info@tnjchem.com | China | 2986 | 55 |
SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 |
sales@sdzschem.com | China | 2930 | 58 |
Jinan Finer Chemical Co., Ltd | +86-531-88989536 +86-15508631887 |
sales@finerchem.com | China | 2957 | 58 |
Xiamen AmoyChem Co., Ltd | +86-86-5926051114 +8615060885618 |
sales@amoychem.com | China | 6383 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22963 | 58 |
79-31-2(Isobutters?ure)Verwandte Suche:
Glycin
Zitronensure
Folsure
2,2-Bis(hydroxymethyl)propionsure
Calciumdipropionat
2,6-Dimethylpyridin
17-β-Hydroxyestr-4-en-3-on-17-(3-phenylpropionat)
2-Chlorpropions?ure
21-Chlor-9-fluor-11β,17-dihydroxy-16β-methylpregna-1,4-dien-3,20-dion-17-propionat
Stearinsure
ACETIC ACID
2-Hydroxy-2-methylpropionsure
2,3-Dibrompropionsaeure
Isobutyraldehyd
Isobutters?ureanhydrid
Isobutyrylchlorid
Ethylisobutyrat
2-Methyl-4-oxo-4H-pyran-3-ylisobutyrat
- alpha-methylpropionicacid
- Cenex RP b2
- Dimethylacetic acid
- dimethyl-aceticaci
- dimethylaceticacid
- i-Butyricacid
- Isobutanoicacid
- Isobuttersαure
- iso-C3H7COOH
- Kyselina isomaselna
- isobutyricacid,2-methylpropanoicacid
- Natural Isobutyric Acid
- ISOBUTYRIC ACID extrapure
- Isobutyric acid,2-Methylpropionic acid
- Isobutyric acid, synthesis grade
- Isobutyric acid, 99+% 1KG
- Isobutyric acid, 99+% 25GR
- Isobutyric acid, 99+% 500GR
- ISOBUTTERSAEURE
- Isobutyric acid >=99.0%
- IsopropylforMicacid,DiMethylaceticacid
- Isobutyric acid 99%
- Isobutyric acid puriss. p.a., >=99.5%
- 2-Methylpropionic acid iso-Butyric acid iso-Butyric acid
- isobutyric acid/2-Methyl propioric acid
- ISOBUTYRIC ACID FOR SYNTHESIS
- RARECHEM AL BO 0091
- ISOPROPYL FORMIC ACID
- ISOBUTYRIC ACID
- FEMA 2222
- 2-Methyl propiori cacid
- 2-methyl-propionicaci
- 2-Methylpropionsαure
- 2-propanecarboxylicacid
- iso-Butyric acid 99+ %
- ISO-BUTYRIC AID
- Isobutyricacid,99%
- Iso butyric acid natural
- ISOBUTYRIC ACID FCC
- ISOBUTYRIC ACID 99+% NATURAL FCC
- ISOBUTYRIC ACID 99+% FCC
- ISOBUTYRIC ACID 500MG NEAT
- #niso-Butyric acid
- Isobutyric acid, 99.5%
- Acetic acid, dimethyl-
- aceticacid,dimethyl-
- acideisobutyrique
- acidemethyl-2propanoique
- alpha-Methylpropanoic acid
- alpha-methylpropanoicacid
- alpha-Methylpropionic acid
- kyselinaisomaselna
- propane-2-carboxylicacid
- Propanoicacid,2-methyl-
- Propionic acid, 2-methyl-
- Tenox EBP 2
- α-Methylpropanoicacid
- Isobutyric acid, Standard for GC