Potassium Methyl Sulfate

Modify Date: 2026-07-01 22:24:00

Potassium Methyl Sulfate Structure
Potassium Methyl Sulfate structure
Common Name Potassium Methyl Sulfate
CAS Number 562-54-9 Molecular Weight 150.195
Density 1.602g/cm3 Boiling Point N/A
Molecular Formula CH3KO4S Melting Point 212-217 °C
MSDS N/A Flash Point N/A

 Names

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

Name Methylsulfuric acid potassium salt
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 1.602g/cm3
Melting Point 212-217 °C
Molecular Formula CH3KO4S
Molecular Weight 150.195
Exact Mass 149.938904
PSA 74.81000
LogP 0.17380
InChIKey WBGWGHYJIFOATF-UHFFFAOYSA-M
SMILES COS(=O)(=O)[O-].[K+]

 MSDS

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

Name: Methylsulfuric acid potassium salt 99% (by sulfated potassium-ash) Material Safety Data Sheet
Synonym: Methyl Potassium Sulfate; Potassium Methyl Sulfat
CAS: 562-54-9
Section 1 - Chemical Product MSDS Name:Methylsulfuric acid potassium salt 99% (by sulfated potassium-ash) Material Safety Data Sheet
Synonym:Methyl Potassium Sulfate; Potassium Methyl Sulfat

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
562-54-9 Sulfuric acid, monomethyl ester, potas 99 209-231-3
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause digestive tract disturbances.
Inhalation:
May cause respiratory tract irritation.
Chronic:
Not available.

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 immediately.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
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.

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 or absorb material, then place into a suitable clean, dry, closed 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. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 562-54-9: 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. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Crystals
Color: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 212.0 - 217.0 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: soluble in water
Specific Gravity/Density:
Molecular Formula: CH3KO4S
Molecular Weight: 150.20

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, strong oxidants.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Irritating and toxic fumes and gases.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 562-54-9 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Sulfuric acid, monomethyl ester, potassium salt - Not listed by ACGIH, IARC, or NTP.

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: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 562-54-9: No information available.
Canada
CAS# 562-54-9 is listed on Canada's NDSL List.
CAS# 562-54-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 562-54-9 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

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

Hazard Codes T: Toxic;
Risk Phrases R20/22;R36/37/38;R45
Safety Phrases 53-45-36/37/39-26
WGK Germany 3
RTECS MJ4500000

 Synthetic Route

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

~%

Potassium Methyl Sulfate Structure

Potassium Methy...

CAS#:562-54-9

Learn More
Literature: Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, , vol. 169, p. 536

~%

Potassium Methyl Sulfate Structure

Potassium Methy...

CAS#:562-54-9

Learn More
Literature: Recueil des Travaux Chimiques des Pays-Bas, , vol. 113, # 9 p. 403 - 410

~%

Potassium Methyl Sulfate Structure

Potassium Methy...

CAS#:562-54-9

Learn More
Literature: Recueil des Travaux Chimiques des Pays-Bas, , vol. 113, # 9 p. 403 - 410

~%

Potassium Methyl Sulfate Structure

Potassium Methy...

CAS#:562-54-9

Learn More
Literature: Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, , vol. 169, p. 536

 Synonyms

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

potassium,methyl sulfate
MFCD00040472
UNII:9B0JF05O1C
Methyl potassium sulfate
Methyl sulfate potassium salt
Sulfuric acid, methyl ester, potassium salt (1:1)
EINECS 209-231-3
potassium methyl sulphate
potassium methylsulfate
Potassium methyl sulfate

 Potassium Methyl Sulfate | FAQ

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

Q: What is the SMILES notation of Methylsulfuric acid potassium salt?
A: SMILES notation of Methylsulfuric acid potassium salt is COS(=O)(=O)[O-].[K+].
Q: What is the InChIKey of Methylsulfuric acid potassium salt?
A: InChIKey of Methylsulfuric acid potassium salt is WBGWGHYJIFOATF-UHFFFAOYSA-M.
Q: What is the English name of Methylsulfuric acid potassium salt?
A: The English name of Methylsulfuric acid potassium salt is Methylsulfuric acid potassium salt.
Q: What is the CAS number of Methylsulfuric acid potassium salt?
A: CAS number of Methylsulfuric acid potassium salt is 562-54-9.
Q: What is the safety information for Methylsulfuric acid potassium salt?
A: Safety information for Methylsulfuric acid potassium salt: 53-45-36/37/39-26.
Q: What are the downstream products of Methylsulfuric acid potassium salt?
A: Related downstream products(CAS) of Methylsulfuric acid potassium salt: 75-52-5;624-91-9;7664-41-7;74-89-5;3405-42-3;5381-78-2;3970-39-6;100-09-4;4685-47-6;499-04-7.
Q: What is the molecular formula of Methylsulfuric acid potassium salt?
A: Molecular formula of Methylsulfuric acid potassium salt is CH3KO4S.
Q: What are the upstream materials of Methylsulfuric acid potassium salt?
A: Related upstream materials(CAS) of Methylsulfuric acid potassium salt: 77-78-1;93-58-3;2459-25-8;7732-18-5.
Q: What is the LogP of Methylsulfuric acid potassium salt?
A: LogP of Methylsulfuric acid potassium salt is 0.17380.
Q: What is the melting point of Methylsulfuric acid potassium salt?
A: Melting point of Methylsulfuric acid potassium salt is 212-217 °C.

 Potassium Methyl Sulfatefactory

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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