Benzol-1,2,4-tricarbonsure-1,2-anhydrid

Bezeichnung:Benzol-1,2,4-tricarbonsure-1,2-anhydrid

CAS-Nr552-30-7

Englisch Name:Trimellitic Anhydride

CBNumberCB5293056

SummenformelC9H4O5

Molgewicht192.13

MOL-Datei552-30-7.mol

Synonyma

Benzol-1,2,4-tricarbonsure-1,2-anhydrid

1,2,4-Benzoltricarbons?ureanhydrid

1,3-Dihydro-1,3-dioxo-5-isobenzofurancarbons?ure

Benzol-1,2,4-tricarbonsure-1,2-anhydrid physikalisch-chemischer Eigenschaften

Schmelzpunkt	163-166 °C (lit.)
Siedepunkt	390 °C
Dichte	1.54
Dampfdichte	6.6 (vs air)
Dampfdruck	<0.01 mm Hg ( 20 °C)
Brechungsindex	1.4717 (estimate)
Flammpunkt	227 °C
storage temp.	Store below +30°C.
Löslichkeit	24.4g/l (decomposition)
pka	3.11±0.20(Predicted)
Aggregatzustand	Flakes
Farbe	White to off-white
PH	2 (21g/l, H2O, 20℃)
Explosionsgrenze	1-7%(V)
Wasserlöslichkeit	DECOMPOSES
Sensitive	Moisture Sensitive
Merck	14,9703
BRN	9394
Expositionsgrenzwerte	ACGIH: TWA 0.0005 mg/m3; STEL 0.002 mg/m3 (Skin) NIOSH: TWA 0.005 ppm(0.04 mg/m3)
Stabilität	Stable. Moisture sensitive.
InChIKey	SRPWOOOHEPICQU-UHFFFAOYSA-N
LogP	0.06-0.54 at 20℃
CAS Datenbank	552-30-7(CAS DataBase Reference)
NIST chemische Informationen	Trimellitic anhydride(552-30-7)
EPA chemische Informationen	Trimellitic anhydride (552-30-7)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	37-41-42/43
S-Sätze:	22-26-36/37/39
OEB	D
OEL	TWA: 0.005 ppm (0.04 mg/m3) Should be handled in the workplace as an extremely toxic substance.
WGK Germany	1
RTECS-Nr.	DC2050000
F	10-21
TSCA	Yes
HS Code	29173980
Giftige Stoffe Daten	552-30-7(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: > 2730 mg/kg LD50 dermal Rabbit 23000 mg/kg

Gefahreninformationscode (GHS)

Trimellitic Anhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE KRISTALLE ODER PULVER.
PHYSIKALISCHE GEFAHREN
Staubexplosion der pulverisierten oder granulierten Substanz in Gemischen mit Luft möglich. Die trockene Substanz kann durch Verwirbeln, Druckluft, Fließen usw. elektrostatisch aufgeladen werden.
CHEMISCHE GEFAHREN
Reagiert sehr heftig mit Basen und Oxidationsmitteln. Reagiert langsam mit Wasser unter Bildung von Trimellitsäure.
ARBEITSPLATZGRENZWERTE
TLV: 0.04 mg/m?(als STEL, ceiling); (ACGIH 2005).
MAK: 0.04 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Sensibilisierung der Atemwege; (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation und durch Verschlucken.
INHALATIONSGEFAHREN
Eine gesundheitsschädliche Partikelkonzentration in der Luft kann beim Dispergieren schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Haut, die Atemwege und reizt stark die Augen. Inhalation von Staub kann zu asthmaähnlichen Reaktionen führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Wiederholte oder andauernde Inhalation kann asthmatische Beschwerden hervorrufen. Die Substanz kann allergische Reaktionen mit grippeähnlichen Symptomen und 'Lungenkrankheit-Anämie-Syndrom'.
LECKAGE
Persönliche Schutzausrüstung: Atemschutzgerät, P3-Filter für giftige Partikel. Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln.
R-Sätze Betriebsanweisung:
R37:Reizt die Atmungsorgane.
R41:Gefahr ernster Augenschäden.
R42/43:Sensibilisierung durch Einatmen und Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
Trimellitic anhydride is a white powder or flakes. It is the anhydride of trimellitic acid (1,2,4-benzenetricarboxylic acid). It is soluble in water, ethanol, acetone and other general organic solvents.
Verwenden
Trimellitic Anhydride is mainly used as raw material for polyester resin,polyimide resin,plasticizer TOTM ,and also be used for producing heatproof & insulating,adhesive,surfactant, paint,synthesize dye materials etc. Trimellitic anhydride is used as an embossing agent for vinyl flooring and as a curing agent for epoxy resins. It is also used as an intermediate for the synthesis of surface coatings chemicals, adhesives, polymers, dyes printing inks, pharmaceuticals .
Verwenden
Trimellitic anhydride is mainly applied to produce good heat-proof, weather-proof and solvent-proof trimellitate plasticizers, among which the most popular product is tri(2-ethylhexyl)trimellitate. It is also used to synthesize polyester resins.TMA can also be applied to curing agent of epoxy resins.
Definition
ChEBI: Trimellitic anhydride is a 2-benzofuran compound having oxo groups at the 1- and 3-positions and a carboxy substituent at the 5-position; the cyclic anhydride formed from the carboxy groups at the 1- and 2-positions of trimellitic acid. It has a role as an epitope, an allergen and a hapten. It is a cyclic dicarboxylic anhydride, a dioxo monocarboxylic acid and a member of 2-benzofurans. It is functionally related to a phthalic anhydride and a trimellitic acid.
Allgemeine Beschreibung
1,2,4-Benzenetricarboxylic anhydride(TA) is a hydrophilic monomer with multipurpose usage; as a curing agent for epoxy based resins and as a plasticizer for polyvinyl chloride(PVC).
Air & Water Reaktionen
Sensitive to moisture. Hydrolyzes slowly. Solutions in water or alcohol may be unstable. Insoluble in water.
Reaktivität anzeigen
1,2,4-Benzenetricarboxylic anhydride reacts exothermically with water. This reaction is expected to be slow, but can become vigorous if local heating accelerates it. Reaction with water is accelerated by acids. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases. Incompatible with strong oxidizing agents, strong acids or strong bases. .
Hazard
Toxic by inhalation. Respiratory sensitization.
Health Hazard
Trimellitic anhydride (TMAN) causes both respiratory irritation and immunologic respiratory disease.
Sicherheitsprofil
Moderately toxic by ingestion. Has caused pulmonary edema from inhalation. Irritant to lungs and air passages. May be a powerful allergen. Typical attack consists of breathlessness, wheezing, cough, running nose, immunologcal sensitization, and asthma symptoms. When heated to decomposition it emits acrid smoke and irritating fumes. See also ANHYDRIDES.
Synthese
3-Xylene is carbonylated with carbon monoxide in the presence of boron trifluoride and hydrogen fluoride to form 2,4-dimethylbenzaldehyde. 2,4-Dimethylbenzaldehyde is decomplexed from the acids, purified, and oxidized to trimellitic acid. Trimellitic acid is subjected to normal dehydration and purification steps to obtain high quality trimellitic anhydride.
mögliche Exposition
TMA is used to produce trimellitate plasticizers, poly (amide-imide) polymers; in paints, enamels, and coatings; polymers, polyesters; as a curing agent for epoxy and other resins; in vinyl plasticizers; agricultural chemicals; dyes and pigments; pharmaceuticals, surface active agents; modifiers, intermediates, and specialty chemicals.
Carcinogenicity
There are no reports of carcinogenicity associated with TMAN exposure. It was not mutagenic in bacterial assays with or without metabolic activation. No teratogenic effects or developmental toxicity was seen in rats or guinea pigs exposed to 500mg/m3 for 6 hours/day during their period of major organogenesis.
Inkompatibilitäten
Dust can cause an explosion. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Reacts slowly with water, forming trimellitic acid. Compounds of the carboxyl group react with all bases, both inorganic and organic (i.e., amines) releasing substantial heat, water and a salt that may be harmful.
Waste disposal
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Trimellitic Anhydride Upstream-Materialien And Downstream Produkte

Benzol-1,2,4-tricarbonsure-1,2-anhydrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

552-30-7, Trimellitic Anhydride Verwandte Suche:

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