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526-73-8 1,2,3-Trimethylbenzene hot selling hly57

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CAS No.:

526-73-8

Grade:

industrial Grade

Content:

98%

Port:

qingdao

Brand:

hly

Packaging:

180kg UN-approved steel drum

Price valid (until):

2026-08-09

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Suqian City Hengliyuan Import and Export Trade Co., LTD

Company Type:

Trader

Location:

China

Payment Terms:

TT against B/L draft before shipment,100% TT in advance

Average Lead Time:

30 days

Qualification:

Main Products:

Acrylonitrile,Sodium biselenite methylamine solution,Methylamine [anhydrous],Zinc dust,Hydrogen peroxide solution [content >8%],Triisopropyl borate

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Product Description
Seller Information

Description

Company Profile ----------
Suqian City Hengliyuan Import and Export Trade Co., LTD is a trading company. The company has introduced advanced scientific and technological achievements from home and abroad, and has superior products from well-known manufacturers at home and abroad. The basic functions are:
1. Domestic trade of various chemical raw materials;
2. Providing price information services and chemical raw material procurement for industrial enterprises;
3. Cooperating with Chinese state-owned enterprise factories, the price and quality are very advantageous.
At present, the company is relying on the combination of industry and trade and global procurement to steadily improve the company's value-added ability and compound competitiveness. We have always been committed to producing high-quality and low-cost goods, so we have been sincerely recognized by many customers. Our goal is to produce the best products and satisfy every customer with professional services and attitudes. We look forward to cooperating with you and establishing a win-win relationship with you. Please rest assured that we will definitely satisfy you.

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----------packaging and delivery ----------

----------Our Advantages---------
High quality with competitive price
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We can provide high quality products with factory price
2. Fast delivery
1) Fast shipment.Various transportation methods for your choice.
2) We have our own agent/remailer/distributor who can help us ship our products very fast , and we have stock in the ir for transferring.
3. Good communication and credit
1) Fast response to customer within 5 hours
2) Good business credit in Europe, US, Japan, Korea, Af r ica and so on.

Items	Specifications

2,4,6-Trimethylphenol (Mesitol)

CAS No.: 526-73-8

1. Basic Identification

Chemical Name: 2,4,6-Trimethylphenol

Synonyms: Mesitol, Mesitophenol, 1-hydroxy-2,4,6-trimethylbenzene

EINECS No.: 208-394-8

MDL No.: MFCD00002231

Molecular Formula: $\boldsymbol{C_9H_{12}O}$

Molecular Weight: 136.19

SMILES: Cc1cc(C)cc(C)c1O

UN Number: UN 2430

HS Code: 2907199090

Hazard Classification: Class 8 Corrosive Substance, Packing Group III

Chemical Category: Sterically hindered monophenol, antioxidant, UV absorber intermediate, pesticide & pharmaceutical building block, resin modifier

2. Physical & Chemical Properties

Appearance

White to pale pink crystalline solid with characteristic phenolic odor; easy sublimation when heated, melts into transparent pale yellow liquid above melting point.

Physical Constants

Parameter	Standard Value	Remarks
Melting Point	68–71 ℃	Solid at room temperature, low melting point for hot melt feeding
Boiling Point	220–222 ℃ (760 mmHg)	High boiling point, low volatility under processing temperature
Density (solid 20℃)	1.033 g/cm³
Refractive Index (liquid 75℃)	1.510–1.512	Purity testing index
Closed Cup Flash Point	102 ℃	Low flammability risk
Water Solubility	Slightly soluble in hot water, almost insoluble in cold water
Organic Miscibility	Freely soluble in ethanol, methanol, acetone, toluene, esters, mineral oils
Aqueous pH	Weakly acidic phenolic solution

Core Chemical Characteristics

High steric hindrance phenolic structure

Two ortho methyl groups surround the -OH group, greatly suppress auto-oxidation discoloration; excellent radical scavenging antioxidant performance, less yellowing than unhindered phenols.
Versatile phenolic reactivity

Can undergo esterification, etherification, nitration, halogenation, Mannich condensation; core raw material for hindered phenolic antioxidants and UV light stabilizers.
Thermal stability

No decomposition below 190 ℃, compatible with plastic extrusion, rubber vulcanization high-temperature processes.
Low staining property

Does not cause discoloration to light-colored rubber, transparent polyolefin products.
Incompatible materials: Strong alkalis, strong oxidants, concentrated mineral acids, heavy metal salts (accelerate discoloration)

3. Export Industrial Quality Specifications

Premium Antioxidant Grade ≥99.0% (Mainstream Export)

Test Item	Standard Spec	Test Method
2,4,6-Trimethylphenol Assay	≥99.0 %	GC / HPLC
Phenol / Cresol Mixed Impurities	≤0.10 %	GC
Polyalkylphenol dimer impurity	≤0.30 %	GC
Moisture Content	≤0.10 %	Karl Fischer Titration
Melting Range	68–71 ℃	Capillary melting point apparatus
Ash Content	≤0.05 %	Gravimetry
Heavy Metals (Pb, As)	≤10 ppm	AAS
Appearance	Uniform white crystal, no pink agglomeration or discoloration	Visual Inspection

UV Stabilizer Special Ultra-Pure Grade

Ultra-low metal ion, ultra-low dimer impurities, dedicated for benzotriazole UV absorber synthesis.

4. Main Industrial Applications

4.1 Antioxidant & Light Stabilizer Intermediate (Largest Consumption)

Key feedstock for synthesizing hindered phenolic antioxidants for plastics, rubber, lubricants; end products feature low volatility and anti-yellowing.
Core raw material for benzotriazole UV absorbers (UV-P, UV-326, UV-327), widely used in PP, PE, PC, PVC transparent materials to resist UV aging.

4.2 Pesticide Industry

Intermediate for bactericides, fungicides and plant growth regulators; Mannich reaction to produce phenolic bactericides for crop protection.
Synthetic raw material for herbicide derivatives with low phytotoxicity.

4.3 Pharmaceutical Fine Chemicals

Building block for anti-inflammatory, antibacterial APIs; sterically hindered phenolic skeleton improves drug metabolic stability.
Synthetic precursor for antioxidant pharmaceutical excipients.

4.4 Resin & Coating Industry

Modifier for phenolic resin, epoxy resin; improves resin heat resistance, anti-oxidation and weather resistance.
Anti-oxidation auxiliary for alkyd coatings, prevents coating long-term outdoor yellowing.

4.5 Lubricant Additive

Low-temperature antioxidant additive for hydraulic oil, gear oil, turbine oil; inhibits oil oxidation sludge generation.

5. Toxicology, Health Hazards & First Aid

Toxicity Profile

Acute Oral LD50 (Rat): 1300–1600 mg/kg (Category 4 harmful if swallowed)
Dermal hazard: Moderate irritation; long-term contact causes dry skin, erythema, allergic dermatitis; molten liquid leads to thermal + chemical compound burns.
Inhalation hazard: Sublimated dust/vapor irritates respiratory tract, triggers cough and throat pain.
Eye hazard: Solid dust or hot molten liquid leads to severe corneal irritation and burn risk.
Environmental hazard: Toxic to aquatic organisms, long-term water pollution risk.

Exposure Symptoms

Inhalation of dust/vapor: Throat stinging, dry cough, nasal swelling, headache.
Skin contact: Dry itchy red rash; hot molten product causes blister burns.
Eye splash: Sharp burning, conjunctival edema, blurred vision.
Oral ingestion: Nausea, stomachache, vomiting, liver metabolic burden.

Complete First-Aid Procedures

Inhalation: Transfer victim to fresh air, gargle with clean water, rest; seek medical help for persistent cough.
Skin Contact: Remove contaminated clothes immediately; rinse skin with plenty of cold running water ≥15 min; cool molten burn area first then medical treatment.
Eye Contact: Force open eyelids, continuously flush eyes with abundant cold water ≥15 min, mandatory ophthalmic examination.
Oral Intake: DO NOT induce vomiting; drink milk or activated carbon suspension and rush to hospital.

6. Storage, Handling & Incompatibility Rules

Mandatory Storage Conditions

Warehouse classification: Class 8 corrosive solid chemical warehouse, separate storage from strong alkalis, oxidants, food raw materials.
Temperature control: Store at ≤30 ℃, cool ventilated warehouse, avoid high temperature to prevent sublimation and caking.
Sealing requirement: 25kg PE-lined composite paper drum fully sealed to avoid sublimation loss and odor leakage.
Shelf life: 12 months under intact sealed packaging.

Strictly Separated Incompatible Materials

Caustic soda, potassium hydroxide, hydrogen peroxide, potassium permanganate, concentrated sulfuric acid, edible chemicals.

Safe Operation Specifications

Operators wear dust-proof respirator, nitrile resistant gloves, impact safety goggles, dust-proof overalls; heat-resistant gloves required for molten material handling.
Melting and feeding workshops equipped with local exhaust ventilation to reduce dust inhalation.
Small leakage: Sweep crystal solid with dry sand, collect into sealed plastic hazardous waste barrels.
Large leakage: Block rainwater runoff to prevent inflow into sewer and water bodies.

7. Export Packaging & Global Transportation Regulations

Standard Export Packaging Modes

Industrial antioxidant grade: 25kg composite paper drum with inner PE liner bag
Lab reagent small package: 1kg / 5kg plastic bottle with outer shockproof carton

UN Transport Compliance Rules

UN 2430, Class 8 Corrosive Substance (Alkylphenols), Packing Group III

Road transport: Ventilated chemical vehicles, avoid long-time sun exposure and high temperature.
Ocean shipment: IMDG Class 8 corrosive goods, paste corrosive hazard label, stacking height ≤2 layers, segregated from food cargo holds.
Loading ban: Mixed loading with strong alkali, oxidants, edible goods is prohibited.

Full Export Document Package

Batch Certificate of Analysis (COA)
GHS-compliant MSDS / SDS
Technical Data Sheet (TDS)
Marine Dangerous Goods Declaration
REACH Registration Report

8. GHS Global Hazard Label Statements

Signal Word: Warning

Hazard Statements:

H302 Harmful if swallowed

H314 Causes severe skin burns and eye damage

H332 Harmful if inhaled

H412 Harmful to aquatic life with long lasting effects

Precautionary Statements:

P261 Avoid breathing dust/vapor

P280 Wear dust mask, protective gloves and eye protection

P301+P312 IF SWALLOWED: Call poison center if unwell

P305+P351+P338 IF IN EYES: Rinse continuously with water for many minutes and seek medical help

P403+P235 Store in cool, ventilated warehouse, tightly sealed

P501 Dispose of waste crystal as corrosive phenolic hazardous waste

9. Fire Emergency Disposal Plan

Approved Fire Extinguishing Agents

Dry powder, CO₂, alcohol-resistant foam, water mist

Forbidden Agents: Strong alkaline foam extinguishing agent

Fire Site Operation Steps

Evacuate personnel to upwind safe zone, isolate fire area.
Cool surrounding packaging drums with water mist to suppress sublimation flammable vapor generation.
Collect fire residue solid waste, prohibit washing waste directly into rivers and sewers.

10. Printable Export COA Template

CERTIFICATE OF ANALYSIS

Product Name: 2,4,6-Trimethylphenol (Mesitol)

CAS No.: 526-73-8

Grade: Export Antioxidant & UV Intermediate Grade

Batch No.: ____________

Net Weight: 25kg/drum

Manufacture Date: ____________

Test Item	Standard Spec	Test Result	Test Method
2,4,6-Trimethylphenol Purity	≥99.0 %		GC
Mixed Phenol Impurities	≤0.10 %		GC
Dimer Impurity	≤0.30 %		GC
Moisture	≤0.10 %		Karl Fischer
Melting Range	68–71 ℃		Capillary Melting Point
Sulfated Ash	≤0.05 %		Gravimetry
Appearance	White uniform crystalline powder without pink discoloration	Visual Inspection

Conclusion: This batch complies with export industrial standard of 2,4,6-Trimethylphenol.

Inspector Signature: ____________

Issuance Date: ____________

11. E-commerce Listing Copy (Alibaba / Echemi Direct Use)

Product Title

2,4,6-Trimethylphenol Mesitol CAS 526-73-8 99% White Crystal Hindered Phenol Intermediate UV Absorber Benzotriazole Raw Material Plastic Rubber Antioxidant Pesticide Fungicide Intermediate

Short Description

2,4,6-Trimethylphenol (C₉H₁₂O, CAS 526-73-8) high-purity white crystalline sterically hindered phenol. Core raw material for benzotriazole UV stabilizer and low-yellowing hindered phenolic antioxidant, also widely used as pesticide bactericide and pharmaceutical API intermediate. Complete UN2430 Class 8 corrosive dangerous goods export documents COA, MSDS and TDS for bulk drum shipment.

Full Description

2,4,6-Trimethylphenol (Mesitol) is a typical tri-methyl substituted hindered phenol fine chemical, supplied as white crystalline solid with ≥99% purity. The two ortho methyl groups form strong steric shielding on phenolic hydroxyl group, greatly improving oxidation resistance and anti-discoloration ability compared with ordinary cresols and phenols, making it irreplaceable in light stabilizer and high-grade antioxidant production chains.

Core downstream application sectors: key synthesis intermediate for benzotriazole UV absorbers UV-P, UV-326, UV-327 for transparent plastics; feedstock for low-volatility hindered phenolic antioxidants for polyolefin, rubber and industrial lubricating oil; building block for crop fungicides and antibacterial pharmaceutical intermediates; modifier for heat-resistant phenolic and epoxy resins. We supply standard industrial antioxidant grade and ultra-low impurity UV stabilizer special grade.

Packed in 25kg PE lined composite paper drums for full-container sea freight. Classified UN2430 Class 8 corrosive hazardous substance, we provide complete IMDG transport, customs inspection and REACH compliance certificates for long-term stable supply to light stabilizer factories, antioxidant additive manufacturers and pesticide fine chemical plants.

Shop 526-73-8 1,2,3-Trimethylbenzene hot selling hly57-Detailed Image 4

ECHEMI Editorial Reference

colourless liquid Trimethylbenzenes exists in three isomeric forms. All isomers are clear, colorless liquids with a distinctive, aromatic odor.
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.|Clear, colorless liquid with a distinctive, aromatic odor.
1,2,3-trimethylbenzene is a trimethylbenzene carrying methyl groups at positions 1, 2 and 3. It has been found in Centaurium erythraea. It has a role as a neurotoxin and a plant metabolite.

Certificates

Basic Info

Product Name:

1,2,3-Trimethylbenzene

Other Name:

Benzene,1,2,3-trimethyl-;1,2,3-Trimethylbenzene;Hemimellitene;Hemimellitol;NSC 5167;NSC 65599

CAS No.:

526-73-8

Molecular Formula:

C9H12

InChIKeys:

InChIKey=FYGHSUNMUKGBRK-UHFFFAOYSA-N

Molecular Weight:

120.195

Exact Mass:

120.19

EC Number:

247-099-9

UNII:

ZK4R7UPH6R

ICSC Number:

1362

NSC Number:

65599|5167

UN Number:

1993

DSSTox ID:

DTXSID8047769

Color/Form:

Colorless liquid|Clear, colorless liquid

HScode:

2902909090

Categories:

Bulk Drug Intermediates

Characteristics

PSA:

XLogP3:

3.7

Appearance:

COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.

Density:

0.89 g/cm³

Melting Point:

-25 °C

Boiling Point:

176 °C

Flash Point:

112-122°F

Refractive Index:

1.501

Water Solubility:

65.51mg/L(25 ºC)

Storage Conditions:

Prior to working with this chemical you should be trained on its proper handling and storage.

Vapor Pressure:

Vapour pressure, kPa at 20°C: 0.18

Vapor Density:

Relative vapour density (air = 1): 4.1

Flammability characteristics:

Flammable Liquid

Explosive limit:

vol% in air: 0.8.6

Odor:

Distinctive, aromatic odor

OH:

3.27e-11 cm3/molecule*sec

Henrys Law Constant:

0.00 atm-m3/mole|Henry's Law constant = 4.36X10-3 atm-cu m/mol at 25 °C

Experimental Properties:

Conversion factors: 1 mg/cu m = 0.20 ppm; 1 ppm = 5.00 mg/cu m|Heat of formation: -58.5 kJ/mol at 298.15 K (liquid); -9.5 kJ/mol at 298.15 K (gas)|Standard molar entropy: 267.9 J/mol K at 298.15 K|Molar heat capacity: 216.4 J/mol K at 298.15 K and constant pressure|Hydroxyl radical reaction rate constant = 3.27X10-11 cu cm/molec-sec at 25 °C

Autoignition Temperature:

878 °F (470 °C)|470 °C

Ionization Potential:

8.48 eV

Flammable Limits:

Lower flammable limit: 0.8% by volume; Upper flammable limit: 6.6% by volume|Flammable Liquid

Heat of Vaporization:

49.05 kJ/mol at 20 °C

Critical Temperature & Pressure:

Critical temperature: 664.5 K; critical pressure: 3.454 MPa

See More 1,2,3-Trimethylbenzene Properties 

Hazard Identification

Classification of the substance or mixture

Flammable liquids, Category 3

Skin irritation, Category 2

Eye irritation, Category 2

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H226 Flammable liquid and vapour H315 Causes skin irritation H319 Causes serious eye irritation
Prevention	P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P233 Keep container tightly closed. P240 Ground and bond container and receiving equipment. P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... P264 Wash ... thoroughly after handling.
Response	P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower]. P370+P378 In case of fire: Use ... to extinguish. P302+P352 IF ON SKIN: Wash with plenty of water/... P321 Specific treatment (see ... on this label). P332+P317 If skin irritation occurs: Get medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage	P403+P235 Store in a well-ventilated place. Keep cool.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

NO open flames, NO sparks and NO smoking. Above 44Â°C use a closed system, ventilation and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding). Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Fireproof. Well closed. Separated from oxidants.Prior to working with this chemical you should be trained on its proper handling and storage. Before entering a confined space where this chemical may be present, check to make sure that an explosive concentration does not exist. Trimethylbenzene must be stored to avoid contact with oxidizers (such as perchlorates, peroxides, permanganates, chlorates, and nitrates), and strong oxidizers (such as chlorine, bromine, and fluorine) since violent reactions occur. Store in tightly closed containers in a cool, well-ventilated area away from heat. Sources of ignition such as smoking and open flames are prohibited where this chemical is used, handled, or stored in a manner that could create a potential fire or explosion hazard. Metal containers involving the transfer of 5 gallons or more of this chemical should be grounded and bonded. Drums must be equipped with self-closing valves, pressure vacuum bungs, and flame arresters. Use only nonsparking tools and equipment, especially when opening and closing containers of this chemical. Trimethyl benzenes

See More 1,2,3-Trimethylbenzene Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Acrylonitrile,Sodium biselenite methylamine solution,Methylamine [anhydrous],Zinc dust,Hydrogen peroxide solution [content >8%],Triisopropyl borate

Location:
Shop No.15, 1st Floor, Building 12, Hengda Huafu, Sucheng District, Suqian City

Payment Terms:
TT against B/L draft before shipment,100% TT in advance

Average lead Time:
30 days

Total Annual Revenue:
Less than $1 million

Total Employees:
5-10

Year of Establishment:
2022
Company Overview

Suqian Hengliyuan Import and Export Corporation, Ltd. is a leading enterprise specializing in the international trade of chemical products. Established in Suqian, Jiangsu Province, China, our company has built a strong reputation for excellence and reliability in the chemical industry.

Our Mission

Our mission is to facilitate global trade by providing high-quality chemical products and exceptional service to our clients. We aim to be a bridge between manufacturers and end-users, ensuring the safe and efficient transfer of chemicals across borders.

Products and Services

We offer a comprehensive range of chemical products, including but not limited to:

Industrial Chemicals: Raw materials for various industries such as pharmaceuticals, agriculture, and manufacturing.

Specialty Chemicals: High-performance chemicals used in specific applications, including water treatment, coatings, and adhesives.

Bulk Chemicals: Large-volume chemicals for industrial processes and manufacturing needs.

Quality Assurance

At Suqian Hengliyuan Import and Export Corporation, Ltd., quality is our top priority. We adhere to stringent quality control measures and international standards to ensure that our products meet the highest levels of purity and performance. Our dedicated quality assurance team conducts rigorous inspections and testing to guarantee the integrity and safety of all our chemical products.

Global Network

Leveraging our extensive network of suppliers and partners, we are able to source and deliver a wide array of chemical products to clients worldwide. Our strategic partnerships and logistical expertise enable us to offer competitive pricing, timely delivery, and customized solutions to meet the diverse needs of our clients.

Commitment to Sustainability

We are committed to sustainable business practices and environmental stewardship. Our operations are designed to minimize environmental impact, and we continuously seek ways to improve our processes and reduce our carbon footprint. We work closely with our suppliers and customers to promote the responsible use and disposal of chemicals.

Customer Focus

Our clients are at the heart of everything we do. We pride ourselves on providing personalized service and building long-term relationships based on trust and mutual benefit. Our experienced team of professionals is dedicated to understanding our clients' needs and delivering solutions that exceed their expectations.
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