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.
----------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.
Complete Product Details – Ethylene Oxide (EO) CAS 75-21-8
1. Basic Identification
CAS No.: 75-21-8
Chemical Name: Ethylene Oxide
Abbreviation: EO
Synonyms: Oxirane, Dimethylene Oxide
EINECS No.: 200-849-9
Molecular Formula: C₂H₄O
Molecular Weight: 44.05
SMILES: C1CO1
UN Number: UN 1040
HS Code: 29101000
Hazard Classification: Class 2.1 Flammable Compressed Gas; Acute Toxicity, Carcinogen
Packing Group I
Chemical Category: Epoxy small ring ether, high active alkylation & ethoxylation monomer
2. Physical & Chemical Properties
Appearance
Colorless gas at normal temperature; colorless transparent volatile liquid under pressurization; sweet ether-like odor.
Core Physical Constants
- Melting Point: -111.7 ℃
- Boiling Point: 10.7 ℃ (extremely volatile at ambient temp)
- Liquid Density (10.7℃): 0.882 g/cm³
- Refractive Index n₂₀/D: 1.3597
- Closed Cup Flash Point: -20 ℃
- Autoignition Temperature: 429 ℃
- Explosion Limit in air: 3.0% ~ 100% (very wide explosive range, extremely dangerous)
- Vapor Pressure (20℃): 1095 mmHg
- Solubility: Fully miscible with water, ethanol, methanol, acetone, benzene, toluene, most organic solvents
- pH of aqueous solution: Weakly alkaline, hydrolyzes to ethylene glycol
Key Chemical Characteristics
- High ring tension of three-membered epoxy ring, extremely high reactivity; easy ring-opening addition with alcohols, amines, carboxylic acids, water, phenols.
- Core raw material for ethoxylation reaction to produce nonionic surfactants, glycols, ethanolamines.
- Self-polymerizes under catalyst to form polyethylene glycol (PEG), polyether polyol.
- Excellent broad-spectrum sterilization & fumigation performance; widely used for medical device ethylene oxide sterilization.
- Severe hazard: Highly flammable, wide explosion range, carcinogenic, irritates eyes, skin and respiratory tract severely.
- Reacts violently with strong acids, oxidants, alkaline catalysts; may cause polymerization runaway and explosion.
3. Industrial Export Quality Standard (Refined Grade ≥99.9%
| Test Item | Standard Spec | Test Method |
| Ethylene Oxide Purity | ≥99.90 % | GC Gas Chromatography |
| Water Content | ≤50 ppm | Karl Fischer Titration |
| Acetaldehyde Impurity | ≤10 ppm | GC |
| Carbon Dioxide | ≤5 ppm | GC |
| Formaldehyde | ≤1 ppm | Colorimetry |
| Free Acidity (as Acetic Acid) | ≤3 ppm | Acid-Base Titration |
| Appearance | Colorless transparent liquid under pressure, free of suspended matter | Visual Inspection |
4. Main Industrial Applications
4.1 Ethylene Glycol Production (Largest Consumption)
Ring-opening hydrolysis to produce monoethylene glycol (MEG), core monomer for PET polyester fiber, bottle-grade plastic, antifreeze coolant.
4.2 Surfactant & Fine Chemical Ethoxylation
- React with fatty alcohol, fatty acid, alkylphenol to make nonionic surfactants for detergent, textile auxiliaries, pesticide emulsifiers.
- Manufacture polyethylene glycol PEG, polyether amine, polyether polyol for polyurethane foam, elastomer.
4.3 Ethanolamine Series Intermediates
Reaction with ammonia generates monoethanolamine, diethanolamine, triethanolamine; used for gas desulfurization, water treatment chelating agent, cosmetic raw material, cement grinding aid.
4.4 Medical Sterilization Fumigant
Low-temperature sterilization for disposable medical devices, surgical instruments, plastic, silicone, optical equipment; kills bacteria, spores, viruses completely without damaging precision parts.
4.5 Pharmaceutical & Peptide Synthesis
- Alkylation reagent for API and amino acid derivatives synthesis.
- Raw material for ethylene glycol ether solvent, plasticizer, preservative.
4.6 Other Fields
- Disinfectant for grain, spices, cultural relics fumigation;
- Raw material for ethanolamine-based corrosion inhibitor, dye solvent.
5. Safety, Packaging, Storage & Transportation Rules
GHS Hazard Classification
- Flammable Gas Category 1
- Acute Inhalation Toxicity Category 2
- Skin Corrosion Category 1B, Serious Eye Damage Category 1
- Carcinogenicity Category 1A
Signal Word: Danger
Main Hazard Statements:
H220 Extremely flammable gas
H330 Fatal if inhaled
H314 Causes severe skin burns and eye damage
H350 May cause cancer
H240 May explode if heated
Export Packaging
- Bulk industrial supply: Insulated pressure stainless steel tank container;
- Small batch: Seamless pressure steel cylinder (200kg/cylinder), nitrogen buffer filling;
- Sterilization special grade: Small high-pressure metal can for medical factory trial use.
Storage Requirements
- Independent Class A flammable gas warehouse, temperature controlled ≤25 ℃, full explosion-proof design, static elimination facilities.
- Strictly isolated from oxidants, strong acids, alkali catalysts, open flame, heat sources and living areas.
- Equipped with EO gas leakage alarm, negative pressure ventilation, full set of anti-corrosion & gas-proof PPE, dry powder fire extinguishers (water mist allowed, water jet forbidden).
- Avoid long-term sealed storage to prevent self-polymerization risk.
Transportation Regulation
UN 1040, Class 2.1 flammable toxic compressed gas, Packing Group I
- Tank/cylinder must be grounded anti-static during transit; avoid collision, sunlight exposure and high temperature.
- Absolutely forbidden mixed loading with oxidants, acid chemicals, edible raw materials.
- Full export documents: COA, MSDS, TDS, IMDG dangerous goods declaration, hazard identification certificate.
6. E-commerce Listing Copy (Direct Copy)
Title
Ethylene Oxide EO Oxirane CAS 75-21-8 99.9% High Purity Pressure Liquid Gas Raw Material for Ethylene Glycol Surfactant Medical Sterilization
Short Description
Ethylene Oxide (EO, CAS 75-21-8) high purity ≥99.9% pressurized liquid gas with ultra-high ring-opening reactivity. Main raw material for ethylene glycol, nonionic surfactant, PEG polyether and medical low-temperature sterilization fumigant. Complete set of export hazardous documents COA, MSDS, TDS available.
Full Listing Description
Ethylene Oxide (Oxirane, EO) with CAS No.75-21-8 is a high-active three-membered epoxy compound supplied as colorless volatile liquid under pressure with purity up to 99.9%. Its strained epoxy ring enables universal ring-opening addition reactions, supporting massive downstream fine chemical manufacturing.
Core application sectors include monoethylene glycol PET polyester production; ethoxylation for detergent & textile nonionic surfactants; ethanolamine gas desulfurization agents; PEG/polyether polyol polyurethane raw materials; and low-temperature EO sterilizer gas for medical disposable devices. Strictly controlled trace aldehyde and water impurities meet industrial and medical grade standards.
Products are delivered via insulated stainless steel tank containers or pressure steel cylinders for full container bulk shipment. Classified as UN1040 Class 2.1 flammable toxic compressed dangerous goods, we supply full official customs clearance documents for global sea and land transportation with stable long-term supply capacity.
7. Printable Export COA Template
CERTIFICATE OF ANALYSIS
Product Name: Ethylene Oxide (EO)
CAS No.: 75-21-8
Grade: Export Refined Industrial Grade
Batch No
Net Weight: 200kg/cylinder
Manufacture Date
| Test Item | Standard Spec | Test Result | Test Method |
| Ethylene Oxide Assay | ≥99.90 % |
| GC Gas Chromatography |
| Water Content | ≤50 ppm |
| Karl Fischer Titration |
| Acetaldehyde | ≤10 ppm |
| GC |
| Carbon Dioxide | ≤5 ppm |
| GC |
| Formaldehyde | ≤1 ppm |
| Colorimetry |
| Free Acidity (as CH3COOH) | ≤3 ppm |
| Acid-Base Titration |
| Appearance | Colorless transparent pressurized liquid without sediment | Visual Inspection |
|
Conclusion: This batch meets export refined standard of Ethylene Oxide.
TDS
Chile
India
Azerbaijan
Malaysia
Vietnam
Ethiopia
