Indole

Modify Date: 2026-06-30 20:00:19

Indole Structure
Indole structure
 Common Name Indole
CAS Number 120-72-9 Molecular Weight 117.148
Density 1.1±0.1 g/cm3 Boiling Point 253.0±9.0 °C at 760 mmHg
Molecular Formula C8H7N Melting Point 51-54 °C(lit.)
MSDS Chinese USA Flash Point 107.8±11.3 °C
Symbol GHS05 GHS06 GHS09
GHS05, GHS06, GHS09		 Signal Word Danger

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 1H-indole
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.1±0.1 g/cm3
Boiling Point 253.0±9.0 °C at 760 mmHg
Melting Point 51-54 °C(lit.)
Molecular Formula C8H7N
Molecular Weight 117.148
Flash Point 107.8±11.3 °C
Exact Mass 117.057846
PSA 15.79000
LogP 2.14
Vapour Pressure 0.0±0.5 mmHg at 25°C
Index of Refraction 1.681
InChIKey SIKJAQJRHWYJAI-UHFFFAOYSA-N
SMILES c1ccc2[nH]ccc2c1
Storage condition 2-8°C
Stability Stable, but may be light or air sensitive. Incompatible with strong oxidizing agents, iron and iron salts.
Water Solubility 2.80 g/L (25 ºC)

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
NL2450000
CHEMICAL NAME :
Indole
CAS REGISTRY NUMBER :
120-72-9
LAST UPDATED :
199710
DATA ITEMS CITED :
15
MOLECULAR FORMULA :
C8-H7-N
MOLECULAR WEIGHT :
117.16
WISWESSER LINE NOTATION :
T56 BMJ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,820,1986 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1070 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology. (Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ 070944) V.1- 1973- Volume(issue)/page/year: 14,111,1985
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
117 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
YKKZAJ Yakugaku Zasshi. Journal of Pharmacy. (Nippon Yakugakkai, 2-12-15 Shibuya, Shibuya-ku, Tokyo 150, Japan) No.1- 1881- Volume(issue)/page/year: 94,1620,1974
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
225 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
KLWOAZ Klinische Wochenscrift. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1922- Volume(issue)/page/year: 35,504,1957
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
790 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AIHAAP American Industrial Hygiene Association Journal. (AIHA, 475 Wolf Ledges Pkwy., Akron, OH 44311) V.19- 1958- Volume(issue)/page/year: 23,95,1962 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Mammal - domestic
DOSE/DURATION :
350 mg/kg/4W-I
TOXIC EFFECTS :
Blood - other changes
REFERENCE :
FEPRA7 Federation Proceedings, Federation of American Societies for Experimental Biology. (Bethesda, MD) V.1-46, 1942-87. Volume(issue)/page/year: 38,868,1979 ** TUMORIGENIC DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1000 mg/kg/25W-I
TOXIC EFFECTS :
Tumorigenic - Carcinogenic by RTECS criteria Blood - leukemia
REFERENCE :
KLWOAZ Klinische Wochenscrift. (Springer-Verlag, Heidelberger Pl. 3, D-1000 Berlin 33, Fed. Rep. Ger.) V.1- 1922- Volume(issue)/page/year: 35,504,1957
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
2000 mg/kg/20W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumor types after systemic administration not seen spontaneously
REFERENCE :
AICCA6 Acta Unio Internationalis Contra Cancrum. (Louvain, Belgium) V.1-20, 1936-64. For publisher information, see IJCNAW. Volume(issue)/page/year: 19,660,1963
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
120 mg/kg/12W-I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Blood - leukemia
REFERENCE :
VOONAW Voprosy Onkologii. Problems of Oncology. For English translation, see PONCAU. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-10, 1928-37; V.1- 1955- Volume(issue)/page/year: 10(9),70,1964
TYPE OF TEST :
TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1200 mg/kg/93W-C
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria Lungs, Thorax, or Respiration - tumors Blood - leukemia
REFERENCE :
VOONAW Voprosy Onkologii. Problems of Oncology. For English translation, see PONCAU. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-10, 1928-37; V.1- 1955- Volume(issue)/page/year: 20(8),75,1974 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - T0819 No. of Facilities: 33 (estimated) No. of Industries: 1 No. of Occupations: 4 No. of Employees: 28314 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T0819 No. of Facilities: 2846 (estimated) No. of Industries: 12 No. of Occupations: 26 No. of Employees: 34484 (estimated) No. of Female Employees: 23811 (estimated)

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS05 GHS06 GHS09
GHS05, GHS06, GHS09
Signal Word Danger
Hazard Statements H302-H311-H315-H318-H335-H400
Precautionary Statements P261-P273-P280-P305 + P351 + P338-P312
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes Xn:Harmful
Risk Phrases R21/22;R36
Safety Phrases S26-S36/37/39-S60-S61-S45-S36/37
RIDADR UN 2811 6.1/PG 3
WGK Germany 1
RTECS NL2450000
Packaging Group III
Hazard Class 9
HS Code 2933990090

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2933990090
Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles127

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Sequential electrochemical treatment of dairy wastewater using aluminum and DSA-type anodes.

Environ. Sci. Pollut. Res. Int. 21(14) , 8573-84, (2014)

Dairy wastewater is characterized by a high content of hardly biodegradable dissolved, colloidal, and suspended organic matter. This work firstly investigates the performance of two individual electro...

The aryl hydrocarbon receptor-dependent disruption of contact inhibition in rat liver WB-F344 epithelial cells is linked with induction of survivin, but not with inhibition of apoptosis.

Toxicology 333 , 37-44, (2015)

Inhibition of apoptosis by the ligands of the aryl hydrocarbon receptor (AhR) has been proposed to play a role in their tumor promoting effects on liver parenchymal cells. However, little is presently...

Enhanced Photoreduction of Nitro-aromatic Compounds by Hydrated Electrons Derived from Indole on Natural Montmorillonite.

Environ. Sci. Technol. 49 , 7784-92, (2015)

A new photoreduction pathway for nitro-aromatic compounds (NACs) and the underlying degradation mechanism are described. 1,3-Dinitrobenzene was reduced to 3-nitroaniline by the widely distributed arom...

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

1H-Benzo[b]pyrrole
EINECS 204-420-7
2,3-Benzopyrrole
Indol
MFCD00005607
Indole
UNII-8724FJW4M5
1H-Indole
1-Azaindene
2,3-Benzopyrole
Ketole
T56 BMJ
1-Benzazole
benzazole
Benzo[b]pyrrole
Indole (8CI)
Benzopyrrole
1H-Indole (9CI)

 Indole | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What are the downstream products of 1H-indole?
A: Related downstream products(CAS) of 1H-indole: 108939-97-5;108977-91-9;106154-54-5;109241-98-7;109740-09-2;375-97-3;612-59-9;487-89-8;61-50-7;58494-59-0.
Q: What is the InChIKey of 1H-indole?
A: InChIKey of 1H-indole is SIKJAQJRHWYJAI-UHFFFAOYSA-N.
Q: What is the molecular weight of 1H-indole?
A: Molecular weight of 1H-indole is 117.148.
Q: What are the storage conditions for 1H-indole?
A: Storage conditions for 1H-indole: 2-8°C.
Q: What is the melting point of 1H-indole?
A: Melting point of 1H-indole is 51-54 °C(lit.).
Q: What is the molecular formula of 1H-indole?
A: Molecular formula of 1H-indole is C8H7N.
Q: What is the safety information for 1H-indole?
A: Safety information for 1H-indole: S26-S36/37/39-S60-S61-S45-S36/37.
Q: What is the English name of 1H-indole?
A: The English name of 1H-indole is 1H-indole.
Q: What is the boiling point of 1H-indole?
A: Boiling point of 1H-indole is 253.0±9.0 °C at 760 mmHg.
Q: What is the SMILES notation of 1H-indole?
A: SMILES notation of 1H-indole is c1ccc2[nH]ccc2c1.

 Indolefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
BioBioPha
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
Zhongshan Xingrui Chemical Co. , Ltd.
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Chemsrc provides Indole(CAS#:120-72-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Indole are included as well.>> amp version: Indole

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