Methylamin, gasf?rmig
|
|
Methylamin, gasf?rmig Eigenschaften
- Schmelzpunkt:
- -93 °C(lit.)
- Siedepunkt:
- -6.3 °C(lit.)
- Dichte
- 0.785 g/mL at 25 °C
- Dampfdichte
- 1.08 (20 °C, vs air)
- Dampfdruck
- 27 psi ( 20 °C)
- Brechungsindex
- n
20/D 1.371
- Flammpunkt:
- 61 °F
- storage temp.
- Store below +30°C.
- L?slichkeit
- highly soluble in water (108g/100g) at 25°C; soluble in alcohol and miscible with ether; HCl salt is soluble in water and absolute alcohol; compound is insoluble in chloroform, acetone, ether, and ethyl acetate
- pka
- 10.63(at 25℃)
- Aggregatzustand
- Gas
- Wichte
- 0.901 (20℃/4℃) (40% Soln.)
- PH
- 14 (H2O, 20°C)
- Odor Threshold
- 0.035ppm
- Explosionsgrenze
- 4.9-20.8%
- Wasserl?slichkeit
- Miscible with water, ethanol, benzene, acetone and ether.
- Merck
- 14,6014
- BRN
- 741851
- Henry's Law Constant
- (x 10-5 atm?m3/mol): 1.11 at 25 °C (Christie and Crisp, 1967)
- Expositionsgrenzwerte
- TLV-TWA 10 ppm (~12.3 mg/m3)(ACGIH, MSHA, and OSHA); IDLH 100 ppm (NIOSH).
- Dielectric constant
- 10.0(18℃)
- Stabilit?t:
- Stable. Highly flammable. Note wide explosion limits. Incompatible with oxidizing agents, acids, alkalies, alkaline earth metals, copper and its alloys, zinc and its alloys.
- LogP
- -0.570
- CAS Datenbank
- 74-89-5(CAS DataBase Reference)
- EPA chemische Informationen
- Methylamine (74-89-5)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | F+,Xn,C,F,T | ||
---|---|---|---|
R-S?tze: | 12-20-37/38-41-34-20/22-11-39/23/24/25-36/37/38-23/24/25-40-19 | ||
S-S?tze: | 7-16-26-36/37-45-29-36/37/39-3/7-3-39-33 | ||
RIDADR | UN 3286 3/PG 2 | ||
OEB | A | ||
OEL | TWA: 10 ppm (12 mg/m3) | ||
WGK Germany | 2 | ||
RTECS-Nr. | PF6300000 | ||
F | 4.5-31 | ||
Selbstentzündungstemperatur | 806 °F | ||
TSCA | Yes | ||
DOT Classification | 2.1 (Flammable gas) | ||
HazardClass | 3 | ||
PackingGroup | II | ||
HS Code | 29211100 | ||
Giftige Stoffe Daten | 74-89-5(Hazardous Substances Data) | ||
Toxizit?t | LD50 orally in rats: 100-200 mg/kg (Kinney); LC50 in rats: 0.448 ml/l (Sarkar, Sastry) | ||
IDLA | 100 ppm |
Bildanzeige (GHS) | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alarmwort | Achtung | ||||||||||||||||||||||||||||
Gefahrenhinweise |
|
||||||||||||||||||||||||||||
Sicherheit |
|
Methylamin, gasf?rmig Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSES KOMPRIMIERTES FLüSSIGGAS MIT CHARAKTERISTISCHEM GERUCH.ERSCHEINUNGSBILD
FARBLOSE L?SUNG IN WASSER MIT STECHENDEM GERUCH.PHYSIKALISCHE GEFAHREN
Die D?mpfe mischen sich leicht mit Luft. Bildung explosionsf?higer Gemische.PHYSIKALISCHE GEFAHREN
Das Gas mischt sich gut mit Luft. Bildung explosionsf?higer Gemische.CHEMISCHE GEFAHREN
Zersetzung beim Verbrennen unter Bildung giftiger Rauche mit Stickstoffoxiden. Starke Base in w?ssriger L?sung. Reagiert sehr heftig mit S?uren. ?tzend. Reagiert sehr heftig mit starken Oxidationsmitteln. Greift Kunststoff, Gummi und Beschichtungen an. Greift Kupfer, Zinklegierungen, Aluminium und galvanisierte Oberfl?chen an.CHEMISCHE GEFAHREN
Reagiert sehr heftig mitQuecksilberverbindungen unter Feuer- und Explosionsgefahr. Mittelstarke Base. Greift Kunststoff, Gummi, Kupfer, Aluminium, Zinklegierungen und galvanisierte Oberfl?chen an.ARBEITSPLATZGRENZWERTE
TLV: 5 ppm (als TWA); 15 ppm (als STEL); (ACGIH 2008).MAK: 10 ppm 13 mg/m?Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe D (DFG 2008).
ARBEITSPLATZGRENZWERTE
TLV: (als TWA) 5 ppm; (als STEL) 15 ppm; (ACGIH 2005).MAK: 10 ppm, 13 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe D; (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation.AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation und durch Verschlucken.INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt eine gesundheitssch?dliche Kontamination der Luft ein.INHALATIONSGEFAHREN
Eine gesundheitssch?dliche Konzentration des Gases in der Luft wird beim Entweichen aus dem Beh?lter sehr schnell erreicht.WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:Das Gas ver?tzt die Augen und die Atemwege. Inhalation des Gases kann zu Lungen?dem führen (s.Anm.). Die Auswirkungen treten u.U. verz?gert ein. ?rztliche Beobachtung notwendig. Schnelle Verdampfung kann zu Erfrierungen führen.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:Die Substanz ver?tzt die Augen und die Haut. Der Dampf reizt stark die Atemwege. ?tzend beim Verschlucken.
LECKAGE
Gefahrenbereich verlassen! Belüftung. Zündquellen entfernen. Ausgelaufene Flüssigkeit in abgedeckten Beh?ltern sammeln. Reste vorsichtig mit verdünnter S?ure neutralisieren. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. Reste sorgf?ltig sammeln. An sicheren Ort bringen. Pers?nliche Schutzausrüstung: Atemschutzfilter für organische Gase und D?mpfe.LECKAGE
Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Belüftung. Zündquellen entfernen. Wasserstrahl NIEMALS auf die Flüssigkeit richten. Dampf mit feinem Wassersprühstrahl niederschlagen. Pers?nliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t.R-S?tze Betriebsanweisung:
R12:Hochentzündlich.R20:Gesundheitssch?dlich beim Einatmen.
R37/38:Reizt die Atmungsorgane und die Haut.
R41:Gefahr ernster Augensch?den.
R34:Verursacht Ver?tzungen.
R20/22:Gesundheitssch?dlich beim Einatmen und Verschlucken.
R11:Leichtentzündlich.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
S-S?tze Betriebsanweisung:
S7:Beh?lter dicht geschlossen halten.S16:Von Zündquellen fernhalten - Nicht rauchen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S29:Nicht in die Kanalisation gelangen lassen.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S3/7:Beh?lter dicht geschlossen halten und an einem kühlen Ort aufbewahren.
S3:Kühl aufbewahren.
S39:Schutzbrille/Gesichtsschutz tragen.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.
Chemische Eigenschaften
Methylamine is a colorless, fi sh-like smelling gas at room temperature. It is used in a variety of industries, such as the manufacture of dyestuffs, treatment of cellulose, acetate rayon, as a fuel additive, rocket propellant, and in leather tanning processes.Physikalische Eigenschaften
Colorless, flammable gas with a strong ammonia-like odor. An experimentally determined recognition odor threshold concentration of 21 ppbv was reported by Leonardos et al. (1969). Odor threshold concentrations of 4.7 ppmv and 35 ppbv were experimentally determined by Nishida et al. (1979) and Nagata and Takeuchi (1990), respectively.Verwenden
Methylamine is used in dyeing and tanning;in photographic developer, as a fuel additive,and as a rocket propellant. It is also usedin organic synthesis and as a polymerizationinhibitor. It occurs in certain plants, such asMentha aquatica.Vorbereitung Methode
Several methods are currently used for synthesis of methylamine. Virtually all produce a mixture of primary, secondary, and tertiary amines which can be continuously separated by distillation and extraction. The most commonly used synthesis involves heating ammonium chloride and methyl alcohol (ratio varies from 2:1 to 6:1, depending on desired ratio of amines) to about 300°C in the presence of a catalyst such as zinc chloride. Alternatively, methylamine can be synthesized by heating ammonium chloride and formaldehyde in the presence of H2 and a hydrogenation catalyst such as nickel or platinum. Methylamine is generally marketed as a liquid or a 33% aqueous solution (HSDB 1988).Definition
ChEBI: The simplest of the methylamines, consisting of ammonia bearing a single methyl substituent.Allgemeine Beschreibung
A colorless gas or a liquid. Pungent fishy odor resembling odor of ammonia. The liquid boils at 20.3°F hence vaporizes rapidly when unconfined. Vapors are heavier than air and may collect in low-lying areas. Easily ignited under most conditions. Under prolonged exposure to intense heat the containers may rupture violently and rocket. Used for making pharmaceuticals, insecticides, paint removers, surfactants, rubber chemicals.Air & Water Reaktionen
Highly flammable. Very soluble in water; the solutions are strongly basic and therefore corrosive. Liquid fumes in air.Reaktivit?t anzeigen
METHYLAMINE neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides.Hazard
(Gas and liquid) Dangerous fire risk. Explosive limits in air 5–21%. Strong irritant to tissue. Eye, skin and upper respiratory tract irritant.Health Hazard
Exposures to methylamine are known to cause adverse health effects among occupational workers. The workers demonstrate symptoms of toxicity that include, but are not limited to, irritation to the eyes, nose, and throat. Studies have indicated that the compound causes injury to the eyes through corneal opacities and edema hemorrhages in the conjunctiva, and injury to the liver. Studies of Guest and Varma indicated no signifi cant deleterious effects on the internal organs or skeletal deformities in experimental miceBrandgefahr
FLAMMABLE. POISONOUS GASES MAY BE PRODUCED IN FIRE. Containers may explode in fire. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. Toxic nitrogen oxides may be formed. Vapors are heavier than air and may travel considerable distance to a source of ignition and flash back.Industrielle Verwendung
Methylamine and its hydrochloride salt are widely used in organic synthesis for introducing the methylamino group. In 1976, industrial consumption was 32,000 tons/year. One of its most important uses is in the preparation of amide-type surfactants. It is also used in the preparation of drugs such as adrenaline and synthetic caffeine. It serves as the base for more than twenty commercial products, among those included are photographic developers, insecticides, and antihistamine drugs (Beard and Noe 1981). It is also widely used in tanning and has been used in the separation of aromatics from aliphatic hydrocarbons (Sittig 1981).Sicherheitsprofil
Poison by subcutaneous route. Moderately toxic by inhalation. A severe skin irritant. Mutation data reported. A strong base. Flammable gas at ordinary temperature and pressure. Very dangerous fire hazard when exposed to heat, flame, or sparks. Explosive when exposed to heat or flame. To fight fire, stop flow of gas. Forms an explosive mixture with nitromethane. When heated to decomposition it emits toxic fumes of NOx. See also AMINES.m?gliche Exposition
Methylamine is used in organic synthesis; a starting material for N-oleyltaurine, a surfactant; and p-N-methylaminophenol sulfate, a photographic developer. It has possible uses in solvent extraction systems in separation of aromatics from aliphatic hydrocarbons. It is also used in the synthesis of many different pharmaceuticals; pesticides and rubber chemicals.Carcinogenicity
Methylamine was positive in the mouse lymphoma assay and negative in the Ames assay.Environmental Fate
Photolytic. The rate constant for the reaction of methylamine and OH radicals in the atmosphere at 300 K is 1.3 x 10-13 cm3/molecule?sec (Hendry and Kenley, 1979).Low et al. (1991) reported that the photooxidation of aqueous primary amine solutions by UV light in the presence of titanium dioxide resulted in the formation of ammonium and nitrate ions.
Chemical/Physical. In an aqueous solution, chloramine reacted with methylamine to form Nchloromethylamine (Isaac and Morris, 1983).
Reacts with acids forming water-soluble salts.
Lager
Methylamine is stored in a cool, well-ventilated noncombustible area separatedfrom possible sources of ignition andoxidizing substances and mercury. Itssolutions are stored in a flammable liquidstorage room or cabinet. The gas is shippedin steel cylinders or tank cars; the liquid isshipped in steel drums or tank cars.Versand/Shipping
UN1061 Methylamine, anhydrous, Hazard Class: 2.1; Labels: 2.1-Flammable gas. UN1235 Methylamine, aqueous solution, Hazard Class: 3; Labels: 3-Flammable liquid, 8-Corrosive material. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.l?uterung methode
Dry the amine with sodium or BaO. It is commercially available in metal cylinders. [Beilstein 4 IV 118.]Inkompatibilit?ten
A medium-strong base. Reacts violently with strong acids; mercury, strong oxidizers; nitromethane. Corrosive to copper, zinc alloys; aluminum, and galvanized surfaces.Waste disposal
Return refillable compressed gas cylinders to supplier. Controlled incineration (incinerator equipped with a scrubber or thermal unit to reduce nitrogen oxides emissions).Methylamin, gasf?rmig Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
N-Methyl-4-pyridinamine
3-Hydrazinyl-N-methylpropanamide
N-Cyano-N'-methyl-ethanimidamide
sodium oleyl sarcosinate
additive AC1210
fluorescent whitening agent AT
didodecyl dimethyl ammoniumm
Methoxyphenamin
1-Methyl-3-phenyl-2-thiourea
BIFEMELANE
N,N-DIMETHYL-4-[(METHYLAMINO)METHYL]ANILINE
Noncyanide zinc plating additive DE
3,4,5-Trimethylphenyl-methylcarbamat
METHYL-(2-TRIFLUOROMETHYL-BENZYL)-AMINE
CHLOROMETHYLACETAMIDE
4-Chlor-N-methylanilin
(4-FLUORO-BENZYL)-METHYL-AMINE
N-Methylpentylamin
(3-FLUOROBENZYL)METHYLAMINE
1-(Methylamino)anthrachinon
2-Chlor-N-methyl-3-oxobutyramid
Reaktionsgemisch, bestehend aus5-Chlor-2-methyl-2H-isothiazol-3-on und 2-Methyl-2H-isothiazol-3-on (3:1)
1,3-Dimethylharnstoff
Zolpidem
Rotenon
2-AMINO-4-METHYLAMINO-6-ETHOXY-1,3,5-TRIAZINE
(1H-IMIDAZOL-2-YLMETHYL)-METHYL-AMINE
3-METHOXY-N-METHYLBENZYLAMINE 97
Bonnecor
2-Hydrazinyl-N-methylacetamide
2-Methoxy-N-methylbenzylamine hydrochloride ,97%
(2-FLUOROBENZYL)METHYLAMINE
N-(4-Methoxybenzyl)-N-methylamine
POLY DIMETHYL DIALLYL AMMONIUM CHLORIDE
Rilmazafone
3-CHLORO-N-METHYLBENZYLAMINE
Ethylmethylcarbamat
Thiamazol
METHYL-PYRIDIN-2-YLMETHYL-AMINE
1-Methylpyrrolidin-3-ol
74-89-5(Methylamin, gasf?rmig)Verwandte Suche:
N-Methylmethanamin, gasf?rmig
Trimethylamin, in w?ssriger L?sung(C > 15%)
(p-Toluolsulfonyl)methylisocyanid
4-Brom-N,N-dimethylanilin
N-Methyl-N-(trimethylsilyl)trifluoracetamid
(Diethylamino)schwefeltrifluorid
4'-Bromacetanilid
2-Methylpropylisocyanid
5-(Trifluormethyl)-m-anisidin
(Ethylenbis(nitrilomethylidyn)-2,2'-diphenolato)cobalt(II)
N-Butylisocyanid
1,1,3,3-Tetramethylbutylisocyanat
α,α,α,α',α',α'-Hexafluor-3,5-xylidin
3'-Trifluormethylacetanilid
Benzylisocyanid
Methylisocyanacetat
Dimethylammonium-2,4-dichlorphenoxyacetat
N,1,1,1-tetramethyl-N-(trimethylsilyl)silylamin
- methylamine(non-specificname)
- methylamine,anhydre
- methylamine,anhydrous
- methylamine,aqueoussolution
- methylamine2,4-dichlorophenoxyacetate
- Methylaminen
- methylaminesolutions
- Metyloamina
- metyloamina(polish)
- METHYLAMINE: 40% SOLUTION IN METHANOL
- METHYLAMINE: 40% W/W AQUEOUS SOLUTION
- METHYLAMINE, PRESSURE TIN WITH 100 ML
- METHYLAMINE SOLUTION, 33% WT. IN ABSOLUT
- METHYLAMINE SOLUTION, 41% IN WATER
- METHYLAMINE, 40 WT. % SOLUTION IN WATER
- METHYLAMINE SOLUTION, 33% IN ABS. ETHYL ALCOHOL
- METHYLAMINE, PRESSURE TIN WITH 250 ML NE T ~175 G
- METHYLAMINE, CYL. WITH 2 L NET ~1.1 KG
- Methylamine solution 2.0 M in tetrahydrofuran
- Methylamine solution 40 %
- METHYLAMINE, 2.0M SOLUTION IN METHYL ALC OHOL
- METHYLAMINE, CYL. WITH 7 L NET ~4 KG
- METHYLAMINE, VIAL WITH 25 ML
- METHYLAMINE, CYL. WITH 14.3 L NET ~8 KG
- METHYLAMINE, 2.0M SOLUTION IN TETRAHYDRO -FURAN
- METHYLAMINE, ANHYDROUS, 98+%
- METHYLAMINE ANHYDROUS CYL. WITH 27 L NET ~15 KG
- MethylamineForSynthesis
- Methylamine alcohol solution
- Methylamine,40%w/waq.soln.
- METHYLAMINE 40% IN H2O
- Methylamine, 2M solution in methanol, pure
- Methylamine, 40 wt% solution in water, extra pure
- METHYLAMINE,40%AQUEOUSSOLUTION
- Methylamine, 25% in methanol
- Methylamine, 2M in tetrahydrofuran
- Methylamine (ca. 40% in Water, ca. 12mol/L)
- Methylamine, 33 wt.% solution in absolute ethanol, AcroSeal
- Monomethylamine 40% Solution
- MethylaMine, pure, 2M solution in THF, AcroSeal
- ForMaMide, for analysis, 99.5% 100ML
- ForMaMide, for analysis, 99.5% 1LT
- anhydrous aMinoMethane
- MethylaMine 2.0M in Methanol
- MethylaMine alcohol solution 30%
- MethylaMine Methanol solution
- MethylaMine MethylaMine solution, 40 wt.% solution in H2O
- Methylamine 2M solution in THF
- MethylaMine, 40 Percent Aqueous Solution
- MethylaMine, 40 wt.% solution in H2O
- MethylaMine solution in alcohol
- MethylaMine solution 2.0 M in Methanol
- MethylaMine solution 2.0 M in THF
- MethylaMine solution 33 wt. % in absolute ethanol
- MethylaMine, 2.0 M solution in Methanol, SpcSeal
- MethylaMine, 2.0 M solution in THF, SpcSeal
- MethylaMine aq
- MethylaMine, 30% solution in ethanol, SpcSeal