Benzidin
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Benzidin Eigenschaften
- Schmelzpunkt:
- 127-128 °C
- Siedepunkt:
- 402°C
- Dichte
- 1.25
- Dampfdruck
- Based on the specific vapor density value of 6.36 (Sims et al., 1988), the vapor pressure wascalculated to be 0.83 at 20 °C.
- Brechungsindex
- 1.6266 (estimate)
- Flammpunkt:
- 11 °C
- storage temp.
- 2-8°C
- L?slichkeit
- Soluble in ethanol (U.S. EPA, 1985) and ether (1 g/50 mL) (Windholz et al., 1983)
- pka
- 4.66(at 30℃)
- Farbe
- Grayish-yellow, crystalline powder; white or sltlyreddish crystals, powder
- Wasserl?slichkeit
- Sparingly soluble. <0.1 g/100 mL at 22 ºC
- Merck
- 13,1077
- BRN
- 742770
- Henry's Law Constant
- (x 10-11 atm?m3/mol): 3.88 at 25 °C (estimated, Howard, 1989)
- Expositionsgrenzwerte
- Because it is a carcinogen and readily
absorbed through skin, no TLV has been
assigned. Exposure should be at an absolute
minimum.
Recognized Human Carcinogen (ACGIH); Human Carcinogen (MSHA); Carcinogen (OSHA); Human Sufficient Evidence, Animal Sufficient Evidence (IARC).
- Stabilit?t:
- Stable. Combustible. Incompatible with strong oxidizing agents.
- InChIKey
- HFACYLZERDEVSX-UHFFFAOYSA-N
- CAS Datenbank
- 92-87-5(CAS DataBase Reference)
- IARC
- 1 (Vol. 29, Sup 7, 99, 100F) 2012
- NIST chemische Informationen
- Benzidine(92-87-5)
- EPA chemische Informationen
- Benzidine (92-87-5)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | T,N,F,Xn | ||
---|---|---|---|
R-S?tze: | 45-22-50/53-52/53-39/23/24/25-23/24/25-11-36/37/38-20/21/22-51/53-67 | ||
S-S?tze: | 53-45-60-61-36/37-16-7-36-26 | ||
RIDADR | UN 1885 6.1/PG 2 | ||
WGK Germany | 3 | ||
RTECS-Nr. | DC9625000 | ||
F | 8 | ||
HazardClass | 6.1(a) | ||
PackingGroup | II | ||
HS Code | 29215900 | ||
Giftige Stoffe Daten | 92-87-5(Hazardous Substances Data) | ||
Toxizit?t | Acute oral LD50 for mice 214 mg/kg, rats 309 mg/kg (quoted, RTECS, 1985). |
Bildanzeige (GHS) |
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Benzidin Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
WEISSES ODER R?TLICHES KRISTALLINES PULVER; VERF?RBT SICH DUNKEL BEI KONTAKT MIT LUFT UND LICHT.CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen und Verbrennen unter Bildung giftiger Rauche mit Stickstoffoxiden. Reagiert sehr heftig mit starken Oxidationsmitteln, vor allem Salpeters?ure.ARBEITSPLATZGRENZWERTE
TLV: Hautresorption Krebskategorie A1(best?tigte krebserzeugende Wirkung beim Menschen); (ACGIH 2005).MAK: Hautresorption; Krebserzeugend Kategorie 1; (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den K?rper durch Inhalation des Aerosols, über die Haut und durch Verschlucken.INHALATIONSGEFAHREN
Verdampfung bei 20°C vernachl?ssigbar; eine gesundheitssch?dliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden, vor allem als Pulver.WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Krebserzeugend für den Menschen.LECKAGE
Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Pers?nliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t. NICHT in die Umwelt gelangen lassen. Verschüttetes Material in abdichtbaren Beh?ltern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgf?ltig sammeln. An sicheren Ort bringen.R-S?tze Betriebsanweisung:
R45:Kann Krebs erzeugen.R22:Gesundheitssch?dlich beim Verschlucken.
R50/53:Sehr giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R52/53:Sch?dlich für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R11:Leichtentzündlich.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-S?tze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Beh?lter sind als gef?hrlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S7:Beh?lter dicht geschlossen halten.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Aussehen Eigenschaften
(4,4'-Diaminobiphenyl, 4,4'-Diaminodiphenyl, Paradiaminodiphenyl, p,p'-Bianilin). Weißes oder schwach rötliches, mitunter grau-gelbliches Pulver, Kristalle oder Blättchen.Gefahren für Mensch und Umwelt
Benzidin ist einer der für den Menschen sicher krebserzeugenden Stoffe. Es entwickeln sich nach einer z.T. 20-jährigen Latenzzeit Blasentumore. Benzidin kann sehr leicht durch die Haut aber auch durch Einatmen durch Einatmen von Dampf oder Staub aufgenommen werden.Es wirkt blutschädigend und schwächend auf das Knochenmark. Nach Verschlucken entstehen Übelkeit und Erbrechen unter Umständen mit nachfolgenden Leber- und Nierenschäden.Schutzma?nahmen und Verhaltensregeln
Nur in geschlossenen Apparaturen arbeiten. Staubbildung unbedingt vermeiden (möglichst wasserfeuchtes Produkt verwenden). Gefäße nicht offen stehenlassen. Keinen Vorrat aufbewahren. Benutzte Geräte nach der Arbeit sofort gründlich reinigen.Schutzhandschuhe aus Gummi (nur als kurzzeitiger Spritz- bzw. Staubschutz).
Vorbeugender Hautschutz (Arbeitsschutzcreme) erforderlich.
Benzidin und seine Salze sind unter Verschluß an einem gut belüfteten Ort aufzubewahren.
Verhalten im Gefahrfall
Verschüttete Substanz vorsichtig aufnehmen. Inhalt zerstörter Behältnisse der Wiederverwendung zuführen oder ordnungsgemäß entsorgen.Substanz brennt selbst nur schwer. Löschmaßnahmen auf Umgebung abstimmen.
Bildung nitroser Gase! Bei Lösch- und Aufräumungsarbeiten Hautkontakt und Einatmen von Staub unbedingt vermeiden.
Erste Hilfe
Nach Hautkontakt: Betroffene Haut mit reichlich Polyethylenglykol, notfalls mit leicht angesäuertem Wasser (Essig) waschen. Auf keinen Fall Alkohol verwenden.Nach Augenkontakt: Unter fließendem Wasser bei geöffnetem Lidspalt mindestens 15 Minuten spülen. Anschließend Isogutt-Augentropfen einbringen. Augenarzt!
Nach Einatmen: Frischluft! Arzt!
Nach Verschlucken: Nach Verschlucken sofort wiederholt Wasser mit reichlich Aktivkohlezusatz trinken lassen. Arzt!
Nach Kleidungskontakt: Verunreinigte Kleidung sofort ausziehen!
Ersthelfer: siehe gesonderten Anschlag
Sachgerechte Entsorgung
Als Sondermüll entsorgen.Beschreibung
Benzidine is a white, greyish-yellow, or slightly reddish crystalline solid or powder. The major use for benzidine is in the production of dyes, especially azo dyes in the leather, textile, and paper industries and as a synthetic precursor in the preparation and manufacture of dyestuffs. It is also used in the manufacture of rubber, as a reagent, and as a stain in microscopy. It is slightly soluble and slowly changes from a solid to a gas.Chemische Eigenschaften
Benzidine is a white, grayish-yellow, or slightly reddish crystalline solid or powder. The major use for benzidine is in the production of dyes, especially azo dyes in the leather, textile, and paper industries, as a synthetic precursor in the preparation and manufacture of dyestuffs. It is also used in the manufacture of dyes and rubber, as a reagent, and as a stain in microscopy. It is slightly soluble and slowly changes from a solid to a gas.Physikalische Eigenschaften
Grayish-yellow to pale reddish powder or crystals. Darkens on exposure to air or light. Odorless.Verwenden
Benzidine was used extensively in the manu facture of dyes. Because of its cancer-causingeffects in humans, its application in dyes hasbeen curtailed. Other uses of this compoundare in chemical analysis: as a reagent for thedetermination of hydrogen peroxide in milkand in the analysis of nicotine. Its hydrochlo ride is used as a reagent to analyze metalsand sulfate.Definition
ChEBI: A member of the class of biphenyls that is 1,1'-biphenyl in which the hydrogen at the para-position of each phenyl group has been replaced by an amino group.synthetische
1-Nitrobenzene restore 1,2-Diphenylhydrazine?turn with acid rearrangement.Vorbereitung Methode
Benzidine production is now exclusively for captive consumption and must be carried out in closed systems under stringent workplace controls. Benzidine is used in the synthesisofdyesanddyeintermediates,asahardenerforrubber, and as a laboratory reagent. The ?rst successful synthetic direct dye was Congo Red, a diazo derivative prepared from benzidinebyBoettigerin1884.Nearlyalldirectdyesareazo products. Congo Red is used in humans intravenously for the medical diagnosis of amyloidosis. The basis for its use is an unexplained af?nity for amyloid, which rapidly removes the dye from the blood. It is used medically for the management of profuse capillary hemorrhage such as the one occurring in septicemias and in the terminal phases of leukemia.Allgemeine Beschreibung
A grayish-yellow to grayish-red, crystalline solid. Toxic by ingestion, inhalation, and skin absorption. Combustion produces toxic oxides of nitrogen. Used to make other chemicals and in chemical and biological analysis.Air & Water Reaktionen
Darkens on exposure to air and light. Soluble in hot water.Reaktivit?t anzeigen
Benzidine forms insoluble salts with sulfuric acid. Can be diazotized, acetylated and alkylated. Is hypergolic with red fuming nitric acid . 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 may be generated in combination with strong reducing agents, such as hydrides.Hazard
Highly toxic by ingestion, inhalation, and skin absorption. Confirmed carcinogen.Health Hazard
Exposure to benzidine causes irritation to the eyes. Laboratory animals exposed to benzidine at as low as 0.01% to 0.08% in food showed adverse health effects, such as organ weight decrease in the liver, kidney, and body weight, and an increase in spleen weight, swelling of the liver, and blood in the urine. Exposure may cause an increase in urination, blood in the urine, and urinary tract tumors. Benzidine is considered acutely toxic to humans by ingestion, with an estimated oral lethal dose of between 50 and 500 mg/kg. The symptoms of acute ingestion exposure include cyanosis, headache, mental confusion, nausea, and vertigo. Dermal exposure may cause skin rashes and irritation. Prolonged exposure to benzidine causes bladder injury in humansSicherheitsprofil
Confirmed human carcinogen producing bladder tumors. Experimental carcinogenic and tumorigenic data. Poison by ingestion and intraperitoneal routes. Human mutation data reported. Can cause damage to blood, including hemolysis and bone marrow depression. On ingestion causes nausea and vomiting, which may be followed by liver and kidney damage. Any exposure is considered extremely hazardous. When heated to decomposition it emits highly toxic fumes of NOx. See also AROMATIC AMINES.Carcinogenicity
Benzidine is known to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in humans.Environmental Fate
Biological. In activated sludge, <0.1% mineralized to carbon dioxide after 5 d (Freitag et al., 1985). Kincannon and Lin (1985) reported a half-life of 76 d when benzidine in sludge was applied to a sandy loam soil.Soil. Benzidine was added to different soils and incubated in the dark at 23 °C under a carbon dioxide-free atmosphere. After 1 yr, 8.3 to 11.6% of the added benzidine degraded to carbon dioxide primarily by microbial metabolism and partially by hydrolysis (Graveel et al., 1986). Tentatively identified biooxidation compounds using GC/MS include hydroxybenzidine, 3- hydroxybenzidine, 4-amino-4′-nitrobiphenyl, N,N′-dihydroxybenzidine, 3,3′-dihydroxybenzidine and 4,4′-dinitrobiphenyl (Baird et al., 1977). Under aerobic conditions, the half-life was estimated to be 2 to 8 d (Lu et al., 1977).
Chemical/Physical. Benzidine is not subject to hydrolysis (Kollig, 1993). Reacts with HCl forming a salt (C12H12N2?2HCl) that is very soluble in water (61.7 mg/L at 25 °C) (Bowman et al., 1976).
Lager
Benzidine should be kept stored in a cool, well-ventilated area, in closed, sealed containers and out of sunlight and away from heat.Versand/Shipping
UN1885 Benzidine, Hazard Class: 6.1; Labels: 6.1—Poisonous materials. PGII.l?uterung methode
Its solution in *benzene is decolorized by percolating through two 2-cm columns of activated alumina, then concentrated until benzidine crystallises on cooling. Recrystallise alternately from EtOH and *benzene to constant absorption spectrum [Carlin et al. J Am Chem Soc 73 1002 1951]. It has also been crystallised from hot water (charcoal) and from diethyl ether. Dry it under vacuum in an Abderhalden pistol. Store it in the dark in a stoppered container. CARCINOGENIC. [Beilstein 13 IV 364.]Inkompatibilit?ten
Dust may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. On contact with strong reducing agents, such as hydrides may form flammable gases. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Contact with red fuming nitric acid may cause fire. Oxidizes in air. 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.Waste disposal
Incineration; oxides of nitrogen are removed from the effluent gas by scrubber, catalytic or thermal device. Package spill residues and sorbent media in 17 hour epoxy-lined drums and move to an EPA-approved disposal site. Treatment may include destruction by potassium permanganate oxidation, hightemperature incineration, or microwave plasma methods. 398 Benzidine Encapsulation by organic polyester resin or silicate fixation. These disposal procedures should be confirmed with responsible environmental engineering and regulatory officials.Vorsichtsma?nahmen
At high temperatures, benzidine breaks down and releases highly poisonous fumes. During use and handling, workers should wear butyl rubber gloves, goggles, and full body plastic coveralls and ensure that no skin is exposed.Benzidin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Dinatrium-8-((3,3'-dimethyl-4'-(4-(4-methylphenylsulfonyloxy)phenylazo)(1,1'-biphenyl)-4-yl)azo)-7-hydroxynaphthalin-1,3-disulfonat
Biphenyl-3,3',4,4'-tetrayltetramin
Dinatrium-4-(4-((4-methylphenyl)sulfonyloxy)phenylazo)-4'-(5-hydroxy-3-methyl-1-(4-sulfonatophenyl)-1H-pyrazol-4-ylazo)-1,1'-biphenyl-3-sulfonat
Dinatrium-4-amino-3-[[4'-[(2,4-diaminophenyl)azo][1,1'-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)naphthalin-2,7-disulfonat
Dinatrium-3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(4-aminonaphthalin-1-sulfonat)
Dinatrium-4,4'-bis(2-hydroxynaphthalin-1-ylazo)biphenyl-2,6'-disulfonat
Tetranatrium-3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[5-amino-4-hydroxynaphthalin-2,7-disulfonat]
C. I. Pigment Red 62
Dinatrium-5,5'-dimethyl-4,4'-bis[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-2,2'-disulfonat
Direct Black BH
Dinatrium-4,4'-bis(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-ylazo)-1,1'-biphenyl-2,6'-disulfonat
Acid Red 111
N,N'-BISBENZYLIDENEBENZIDINE
4,4'-Diiodbiphenyl
3,3'-Dinitro[1,1'-biphenyl]-4,4'-diamin
4,4'-BIPHENYLDICARBONYL CHLORIDE
Fluoren-2,7-diyldiamin
N,N'-[1,1'-Biphenyl-4,4'-diylbis(azo)bis(5-hydroxy-7-sodiosulfonaphthalene-6,2-diyl)]bis(glycine sodium) salt
4-Amino-6-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphtyl)azo]-1,1'-biphenyl-4-yl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt
5-Amino-4-hydroxy-3-[[4'-[(2-hydroxy-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt
4-Amino-3-[(2,5-dichlorophenyl)azo]-6-[[4'-[(3-methyl-4-hydroxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt
Benzidin Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 210)Lieferanten
Firmenname | Telefon | Land | Produktkatalog | Edge Rate | |
---|---|---|---|---|---|
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21632 | 55 |
ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 |
ivan@atkchemical.com | China | 32965 | 60 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
sales@coreychem.com | China | 29871 | 58 |
Jilin Chinese Academy of Sciences - Yanshen Technology Co., Ltd. | 0431-80514535 13634302652 |
Extension@chemextension.com | CHINA | 967 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28172 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22963 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39894 | 58 |
Alchem Pharmtech,Inc. | 8485655694 |
sales@alchempharmtech.com | United States | 63687 | 58 |
Richest Group Ltd | 18017061086 |
oled@richest-group.com | CHINA | 5600 | 58 |
Shanghai Daeyeon Chemicals Co., Ltd | 021-64478606 +8615900664856 |
daeyeon001@vip.163.com | China | 2062 | 58 |
92-87-5(Benzidin)Verwandte Suche:
Biphenyl
3,3',5,5'-Tetramethyl[1,1'-biphenyl]-4,4'-diamindihydrochlorid
4,4'-Dimethylbiphenyl
4,4'-Diaminodiphenylsulfon
1,3-Diaminoguanidinhydrochlorid
N,N-Dimethyl-phenylendiamin (p)
Biphenyl-3,3',4,4'-tetrayltetramin
[1,1'-Biphenyl]-4,4'-dicarbonsure
Iminodiacetonitril
4,4'-Ethylendianilin
4,4'-Diacetylbiphenyl
4-Amino-diphenylamin
Anilin
Diphenylamin
2,2'-[(3,3'-Dichlor[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[N-(2,4-dimethylphenyl)-3-oxobutyramid]
Biphenyl-2-ylamin
2,7-Dinitro-9H-fluoren-9-on
(2,4,7-Trinitrofluoren-9-yliden)malonitril
- [1,1'-Biphenyl]-4,4'-diamine
- 4,4’-bianiline
- 4,4’-diamino-bipheny
- 4,4’-diaminodiphenyl
- benzydyna(polish)
- biphenyl -4,4'-ylenediamine
- Biphenyl,4,4'-diamino-
- Fast Corinth Base B
- fastcorinthbaseb
- NCI-C03361
- p,p’-bianiline
- p,p’-Bianiline,[1,1’-Biphenyl]-4,4’-diamine
- p,p’-Diaminodiphenyl
- p,p’-dianiline
- p,p'-Bianiline
- p,p-Bianiline
- p,p'-Dianiline
- benzidine 1,1'-biphenyl-4,4'-diamine 4,4'-diaminobiphenyl biphenyl-4,4'-ylenediamine
- Benzidine Standard
- Benzidine,4,4′-Diaminobiphenyl
- Benzidine 250mg [92-87-5]
- NSC 146476
- 4.4'-Benzidi
- 4,4’-diphenylenediamine
- 4,4'-Bianiline
- 4,4'-Biphenylenediamine
- 4,4'-Diaminodiphenyl
- 4,4'-Diphenylenediamine
- 4'-Amino[1,1'-biphenyl]-4-ylamine
- ai3-00140
- benzidin(czech)
- benzidinebase
- Benzydyna
- p-benzidine
- p-Diaminodiphenyl
- Rcra waste number U021
- rcrawastenumberu021
- P,P'-DIAMINOBIPHENYL
- SPECS AC-907/25014310
- 4,4'-Diaminobiphenyl Solution, 100ppm
- (1,1'-Biphenyl)-4,4'-di
- 4-(4-aminophenyl)benzenamine
- BENZIDINE, 1X1ML, CH2CL2, 500UG/ML
- BENZIDINE, 100MG, NEAT
- BENZIDINE FREE BASE
- BENZIDINE, 1X1ML, MEOH, 5000UG/ML
- BENZIDINE OEKANAL, 100 MG
- BENZIDINE FREE BASE ISOPAC
- BENZIDINE 99.5%
- BENZIDINE (RING-D8)
- BENZIDINE
- c.i. azoic diazo component 112
- C.I. 37225
- 4,4'-DIAMINOBIPHENYL
- 4,4'-DIAMINO(BIPHENYL-D8)
- 4,4'-diamino-1,1'-biphenyl
- 4,4'-Biphenyldiamine
- [4-(4-aminophenyl)phenyl]amine