8-Hydroxy-5-quinolinesulfonic acid

Modify Date: 2026-07-01 12:00:58

8-Hydroxy-5-quinolinesulfonic acid Structure
8-Hydroxy-5-quinolinesulfonic acid structure
Common Name 8-Hydroxy-5-quinolinesulfonic acid
CAS Number 84-88-8 Molecular Weight 225.221
Density 1.6±0.1 g/cm3 Boiling Point 432ºC
Molecular Formula C9H7NO4S Melting Point 311-313°C
MSDS Chinese USA Flash Point N/A
Symbol GHS07
GHS07
Signal Word Warning

Summary: 8-Hydroxyquinoline-5-sulfonic acid (Chinese name: 8-羟基喹啉-5-磺酸,CAS number: 84-88-8) is a white to grayish white crystalline powder with a molecular formula of C9H7NO4S and a molecular weight of 225.221. This compound is commonly used as a pharmaceutical intermediate, organic synthesis intermediate, and analytical reagent, and can also be used for the fluorescent detection of metal ions such as bismuth, copper, iron, silver, vanadium, and zinc. For research-use only, not for medical or clinical usage.


 Names

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

Name 8-Hydroxyquinoline-5-sulfonic acid
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 1.6±0.1 g/cm3
Boiling Point 432ºC
Melting Point 311-313°C
Molecular Formula C9H7NO4S
Molecular Weight 225.221
Exact Mass 225.009583
PSA 95.87000
LogP -1.28
Index of Refraction 1.711

 MSDS

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

Name: 8-Hydroxyquinoline-5-Sulfonic Acid Monohydrate 98% Material Safety Data Sheet
Synonym: None
CAS: 84-88-8
Section 1 - Chemical Product MSDS Name:8-Hydroxyquinoline-5-Sulfonic Acid Monohydrate 98% Material Safety Data Sheet
Synonym:None

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
84-88-8 8-Hydroxyquinoline-5-Sulfonic Acid Mon 98 201-570-5
Hazard Symbols: XN
Risk Phrases: 40

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Limited evidence of a carcinogenic effect.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation. The toxicological properties of this material have not been fully investigated.
Skin:
May cause skin irritation. The toxicological properties of this material have not been fully investigated.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 84-88-8: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Powder
Color: yellow
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: > 300 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: N/A
Explosion Limits, upper: N/A
Decomposition Temperature:
Solubility in water: slightly soluble
Specific Gravity/Density:
Molecular Formula: C9H7NO4S.H2O
Molecular Weight: 243.24

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide, nitrogen.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 84-88-8: VC2570000 LD50/LC50:
Not available.
Carcinogenicity:
8-Hydroxyquinoline-5-Sulfonic Acid Monohydrate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION


Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 40 Limited evidence of a carcinogenic effect.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
S 28A After contact with skin, wash immediately with
plenty of water.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 84-88-8: No information available.
Canada
CAS# 84-88-8 is listed on Canada's NDSL List.
CAS# 84-88-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 84-88-8 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Toxicological Information

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

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VC2570000
CHEMICAL NAME :
5-Quinolinesulfonic acid, 8-hydroxy-
CAS REGISTRY NUMBER :
84-88-8
BEILSTEIN REFERENCE NO. :
0195247
LAST UPDATED :
199701
DATA ITEMS CITED :
5
MOLECULAR FORMULA :
C9-H7-N-O4-S
MOLECULAR WEIGHT :
225.23

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>800 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
Mutation in microorganisms
TEST SYSTEM :
Bacteria - Salmonella typhimurium
DOSE/DURATION :
50 mg/L
REFERENCE :
CUMIDD Current Microbiology. (Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ 07094) V.1- 1978- Volume(issue)/page/year: 11,59,1984 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - E0080 No. of Facilities: 14 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 55 (estimated)

 Safety Information

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

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn:Harmful
Risk Phrases R22;R36
Safety Phrases S26-S36
RIDADR 2811
WGK Germany 3
RTECS VC2570000
Packaging Group III
Hazard Class 6.1(b)
HS Code 29334990

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

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

HS Code 2933499090
Summary 2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles25

More Articles

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

Potential application of N-carbamoyl-beta-alanine amidohydrolase from Agrobacterium tumefaciens C58 for beta-amino acid production.

Appl. Environ. Microbiol. 75(2) , 514-20, (2009)

An N-carbamoyl-beta-alanine amidohydrolase of industrial interest from Agrobacterium tumefaciens C58 (beta car(At)) has been characterized. Beta car(At) is most active at 30 degrees C and pH 8.0 with ...

NMR, DFT and luminescence studies of the complexation of Al(III) with 8-hydroxyquinoline-5-sulfonate.

Dalton Trans. 41(40) , 12478-89, (2012)

Multinuclear ((1)H, (13)C and (27)Al) magnetic resonance spectroscopy (1D and 2D), DFT calculations and fluorescence have been used to study the complexation of 8-hydroxyquinoline-5-sulfonate (8-HQS) ...

Structural and photophysical studies on gallium(III) 8-hydroxyquinoline-5-sulfonates. Does excited state decay involve ligand photolabilisation?

Dalton Trans. 42(10) , 3682-94, (2013)

Multinuclear ((1)H, (13)C and (71)Ga) magnetic resonance spectroscopy (1D and 2D), DFT calculations and luminescence techniques have been used to study 8-hydroxyquinoline-5-sulfonate (8-HQS) and its c...

 8-Hydroxy-5-quinolinesulfonic acidBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Antibacterial activity against Burkholderia thailandensis E264 assessed as bacterial ...
Source: ChEMBL
Target: Burkholderia thailandensis
External Id: CHEMBL2412831
Name: qHTS screening for TAG (triacylglycerol) accumulators in algae
Source: 11812
Target: N/A
External Id: FATTTLab-Algae-Lipid
Name: Antifungal activity against Candida albicans
Source: ChEMBL
Target: Candida albicans
External Id: CHEMBL5229066
Name: Inhibition of Burkholderia pseudomallei recombinant methionine aminopeptidase 1 using...
Source: ChEMBL
Target: N/A
External Id: CHEMBL2412835
Name: Screen for inhibitors of RMI FANCM (MM2) intereaction
Source: 11908
Target: N/A
External Id: RMI-FANCM-MM2
Name: HIV Enzyme Data
Source: NIAID
Target: N/A
External Id: HIV Enzyme Data
Name: Small-molecule inhibitors of ST2 (IL1RL1)
Source: 20881
Target: interleukin-1 receptor-like 1 isoform [homo sapiens]
External Id: ST2_IL33_Inhibitors_Primary_Screening_77700
Name: Inhibition of Sprague-Dawley rat liver COMT after 10 mins using 0.05 uCi [14CH3]-SAM ...
Source: ChEMBL
Target: Catechol O-methyltransferase
External Id: CHEMBL3282132
Name: NCI human tumor cell line growth inhibition assay. Data for the MCF7 Non-Small Cell L...
Source: DTP/NCI
Target: N/A
External Id: MCF7_OneDose
Name: Inhibitors of CDC25B-CDK2/CyclinA interaction
Source: Center for Chemical Genomics, University of Michigan
External Id: MScreen:TargetID_600
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 Synonyms

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

Oxine-5-sulfonic acid
8-Hydroxy-5-quinolinesulfonic acid
Sulfoxine
EINECS 201-570-5
8-hydroxy-quinoline-5-sulfonic acid
5-Sulfo-8-hydroxyquinoline
8-Hydroxy-5-sulfoquinoline
8-hydroxyquinoline sulfonic acid (5)
5-Sulfooxine
8-Hydroxyquinoline-5-sulfonic acid monohyroate
8-Hydroxy-5-quinolinesulfonic acid hydrate
8-HYDROXYGUINOLINE-5-SULFONIC ACID
5-Sulfo-8-quinolinol
8-HYDROXYQUINOLINE-5-SULFONICACID
6,10-DIMETHYL-2-UNDECANONE
8-hydroxyquinolin-5-yl-sulfonic acid
8-HYDROXYQUINOLINE-5-SULFONIC ACID MONOHYDRATE
8-QUINOLINOL-5-SULFONICACID
MFCD00006795
8-HYDROXYQUINOLINE-5-SULPHONIC ACID MONOHYDRATE
8-Hydroxyquinoline-5-sulfonic acid
8-HYDROXYQUINOLINE-5-SULFONICACIDMONOHYDRATE
5-Quinolinesulfonic acid,8-hydroxy
8-HYDROXYQUINOLINE-5-SULFONIC ACID, MONOHYDRATE
8-QUINOLINOL-5-SULFONIC ACID
4-HYDROXYQUINOLINE-5-SULFONIC ACID
8-HYDROXYQUINOLINE-5-SULFONIC ACID MONOHYDRATE FOR SYNTHESIS

 8-Hydroxy-5-quinolinesulfonic acid | FAQ

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

Q: What is the melting point of 8-Hydroxyquinoline-5-sulfonic acid?
A: Melting point of 8-Hydroxyquinoline-5-sulfonic acid is 311-313°C.
Q: What is the molecular weight of 8-Hydroxyquinoline-5-sulfonic acid?
A: Molecular weight of 8-Hydroxyquinoline-5-sulfonic acid is 225.221.
Q: What is the boiling point of 8-Hydroxyquinoline-5-sulfonic acid?
A: Boiling point of 8-Hydroxyquinoline-5-sulfonic acid is 432ºC.
Q: What are the upstream materials of 8-Hydroxyquinoline-5-sulfonic acid?
A: Related upstream materials(CAS) of 8-Hydroxyquinoline-5-sulfonic acid: 148-24-3;98-37-3;107-02-8;129305-09-5;85-44-9;110-15-6;127-09-3;6336-86-3;7664-93-9;13460-50-9.
Q: What is the CAS number of 8-Hydroxyquinoline-5-sulfonic acid?
A: CAS number of 8-Hydroxyquinoline-5-sulfonic acid is 84-88-8.
Q: What is the English name of 8-Hydroxyquinoline-5-sulfonic acid?
A: The English name of 8-Hydroxyquinoline-5-sulfonic acid is 8-Hydroxyquinoline-5-sulfonic acid.
Q: What is the polar surface area (PSA) of 8-Hydroxyquinoline-5-sulfonic acid?
A: Polar surface area (PSA) of 8-Hydroxyquinoline-5-sulfonic acid is 95.87000.
Q: What are the downstream products of 8-Hydroxyquinoline-5-sulfonic acid?
A: Related downstream products(CAS) of 8-Hydroxyquinoline-5-sulfonic acid: 547-91-1;92-24-0;1785-52-0;89-00-9;15450-76-7;3062-37-1;1090-13-7;1084-32-8;65053-85-2;7333-09-7.
Q: What is the molecular formula of 8-Hydroxyquinoline-5-sulfonic acid?
A: Molecular formula of 8-Hydroxyquinoline-5-sulfonic acid is C9H7NO4S.
Q: What is the safety information for 8-Hydroxyquinoline-5-sulfonic acid?
A: Safety information for 8-Hydroxyquinoline-5-sulfonic acid: S26-S36.

 8-Hydroxy-5-quinolinesulfonic acidfactory

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

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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