CAS No.23491-45-4,Hoechst 33258 Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	23491-45-4
Name:	Hoechst 33258

Formula:	C₂₅H₂₇Cl₃N₆O
Molecular Weight:	533.888
Synonyms:	Phenol,4-[5-(4-methyl-1-piperazinyl)[2,5'-bi-1H-benzimidazol]-2'-yl]-,trihydrochloride (9CI);Phenol,p-[5-[5-(4-methyl-1-piperazinyl)-2-benzimidazolyl]-2-benzimidazolyl]-,trihydrochloride (8CI);2-[2-(4-Hydroxyphenyl)-6-benzimidazolyl]-6-(1-methyl-4-piperazyl)-benzimidazoletrihydrochloride;2-[2-(4-Hydroxyphenyl)-6-benzimidazolyl]-6-(1-methyl-4-piperazyl)benzimidazoletrichloride;Bisbenzimide (quenchant);Bisbenzimidetrihydrochloride;H 33258;Hoechst 33258;NSC 322921;Pibenzimol hydrochloride;4-[5-[5-(4-Methyl-1-piperazinyl)-2-benzimidazolyl]-2-benzimidazolyl]phenoltrihydrochloride;
EINECS:	245-690-6
Density:	1.5099 (rough estimate)
Melting Point:	314 °C
Boiling Point:	643.1oC at 760mmHg
Flash Point:	342.7oC
Solubility:	soluble in water
Appearance:	yellow to yellow-green powder
Hazard Symbols:	Xn
Risk Codes:	22-36/38-36/37/38-20/21/22
Safety:	26-36-24/25-23
PSA:	84.07000
LogP:	6.63950

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Chemistry

IUPAC Name: 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride
Formula: C₂₅H₂₇C_l3N₆O
Molecular Weight: 533.88
Molecular Structure of 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride (CAS NO.23491-45-4 ):

Melting Point: 314 °C
Flash Point: 342.7 °C
Enthalpy of Vaporization: 94.9 kJ/mol
Boiling Point: 643.1 °C at 760 mmHg
Vapour Pressure: 1.98E-16 mmHg at 25°C
Appearance: yellow to yellow-green powder

Toxicity Data With Reference

1.	mmo-sat 100 µmol/L	AMACCQ Antimicrobial Agents and Chemotherapy. 9 (1976),77.
2.	dnd-esc 10 mg/L	MUREAV Mutation Research. 89 (1981),95.
3.	sce-ham:lng 15 µmol/L	HEREAY Hereditas. 96 (1982),295.
4.	sce-ham:ovr 10 µmol/L	NATUAS Nature. 258 (1975),121.
5.	ivn-rat LD50:32,200 µg/kg	NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) No. PB84-171206 .
6.	ivn-mus LD50:36,900 µg/kg	NTIS** National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) No. PB84-171206 .

Safety Profile

Poison by intravenous route. Mutation data reported. When heated to decomposition it emits very toxic fumes of HCl and NO_x.
Safety Information about 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride (CAS NO.23491-45-4 ):
Hazard Codes:
Xn:
Risk Statements about 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride (CAS NO.23491-45-4 ): R22: Harmful if swallowed.
R36/38: Irritating to eyes and skin.
R36/37/38: Irritating to eyes, respiratory system and skin.
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements about 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride (CAS NO.23491-45-4 ) S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
S24/25: Avoid contact with skin and eyes.
S23: Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer).
F3: Hygroscopic.
F8: Photosensitive.
F10: Keep under argon.
WGK Germany: 3
RTECS: SM1140500

Specification

The chemical synonyms of 4-[5-[6-(4-Methylpiperazin-1-yl)-1H-benzimidazol-2-yl]-1,3-dihydrobenzimidazol-2-ylidene]cyclohexa-2,5-dien-1-one trihydrochloride (CAS NO.23491-45-4 ) are 33258hoechst ; 4-(5-(4-Methyl-1-piperazinyl)(2,5’-bi-1h-benzimidazol)-2’-yl)-phenotrihy ; 4-[5-(4-Methyl-1-piperazinyl)[2,5’-bi-1h-benzimidazol]-2’-yl]-phenotrihydr ; Bisbenzimidazoletrihydrochloride ; Bisbenzimidehydrochloride ; Hoe33058 ; Hoechstdye33258 ; Nsc-322921 . This product shoud be storaged at 2-8°C. Hoechst 33258 is harmful to human beings, please make some protection when operate.