Perchloroethylene CAS 127-18-4

Dow Perchloroethylene Supplier

Three Dow perchloroethylene grades supplied for professional cleaning processes: DOWPER Pure Power Solvent for textile cleaning, Dow PCE low emission grade for closed-loop vapour degreasing, and the general PCE grade in sealed drums and tanks.

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99.95%

DOWPER Pure Power purity

121 °C

Boiling point at 760 mmHg

300 / 330 kg

Sealed drum net weights

UN 1897

Transport class, ADR 6.1D

Product Portfolio

Three Dow PCE Grades

Each Dow perchloroethylene grade is matched to the cleaning process it is actually run in, instead of being sold as one generic solvent. Purity, stabilization and packing are selected together, so the drum that arrives behaves the same way in your machine as it does in the data sheet.

DOWPER Pure Power Solvent

A virgin, high-purity perchloroethylene developed for professional textile cleaning. Purity above 99.95% combined with a dedicated stabilization package keeps the solvent in working condition for longer, which protects both the cleaning result and the life of the machine. Low viscosity and low surface tension give the mechanical cleaning power that modern dry-cleaning equipment depends on, and a Kauri Butanol index of 90 places it at the top of the solvent range for grease and oil removal.

Purity above 99.95%
Boiling point 121 °C
Kauri Butanol index 90
Viscosity 0.880 mPa·s
Surface tension 32.2 mN/m
SAFE-TAINER units 15 L and 33 L

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Dow Perchloroethylene (PCE)

The general dry-cleaning and multi-purpose grade of dow perchloroethylene, CAS 127-18-4. A clear, colourless, non-flammable liquid with no flash point that dissolves oils, greases, fats and waxes, and penetrates fibres quickly because of its low viscosity. Its low water solubility lets the solvent separate cleanly from water and be recovered and reused inside the machine.

Purity 99.9% or higher
Distillation range 120.5–122.0 °C
Specific gravity 1.618–1.622 g/mL
Moisture 30 ppm max
Non-volatile residue 10 ppm max
Alkalinity as NaOH 30 ppm max

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Perchloroethylene pail for low emission grade handling

Dow PCE Low Emission Grade

A perchloroethylene grade specified for closed-loop vapour degreasing, where the emission balance of the line decides the operating cost. The stabilizer package is selected for resistance to acidification, water humidity and light metals including aluminium, so the solvent stays stable across continuous distillation and re-use cycles instead of breaking down into acidic by-products. Handled in closed machines with recovered solvent, fugitive vapour loss stays well below the levels seen in open cleaning, and it is normally handled in the closed SAFE-TAINER units used for virtually emission-free solvent transfer.

Stabilized against acidification
Stable against water humidity
Suited to continuous distillation
Non-flammable, no flash point
ASTM D4376 vapour-degreasing reference
UN 1897, ADR class 6.1D

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Technical Specifications

Physical Property Data

The values below are the typical properties published for Dow DOWPER perchloroethylene and the DOWPER Pure Power grade. The specification that applies to your shipment is the one stated on the batch certificate of analysis issued with the consignment.

Property	Typical value
Chemical name	Perchloroethylene (Tetrachloroethylene)
CAS number	127-18-4
EINECS number	204-825-9
Empirical formula	C₂Cl₄
Molar mass	165.84 g/mol
Appearance	Colourless liquid, no suspended matter
Density at 20 °C	1.623 g/cm³
Boiling point	121 °C
Freezing point	−22 °C
Flash point	None, not flammable
Incipient thermal decomposition	150 °C
Vapour pressure at 20 °C	8.45 hPa
Viscosity at 20 °C	0.880 mPa·s
Surface tension at 20 °C	32.2 mN/m
Relative evaporation rate, ether = 1	9.5
Kauri Butanol index	90
Heat of vapourisation at boiling point	209.8 kJ/kg
Vapour density, air = 1.0	5.8
Dielectric strength	30 000 V
Solvent in water at 20 °C	0.015 wt%
Water in solvent at 20 °C	0.010 wt%
Alkalinity as NaOH	30 ppm max
Non-volatile residue	25 ppm max
Transport classification	UN 1897, ADR class 6.1D
Customs tariff heading	29032300

Scroll the table sideways to read every value.

Typical values published in the DOWPER product data. They do not constitute a sales specification; the batch certificate of analysis governs each delivery.

Application Fields

Where PCE Is Used

Perchloroethylene remains the reference chlorinated solvent wherever the soil has to be removed quickly and the part dried completely in the same line, without the water break, staining or rinsing step that aqueous cleaning imposes.

01Professional dry cleaning
DOWPER grades for garment and leather cleaning machines, spotting agents, wool scouring and finishing work on delicate fibres.
02Vapour degreasing
Closed-loop machines with continuous distillation for machine parts, moulds and metal assemblies that carry machining oils.
03Aerospace components
Cleaning processes written to ASTM D4376 for vapour-degreasing grade perchloroethylene, with stress-corrosion checks to ASTM F-945.
04Automotive service
Brake and engine cleaning aerosols, parts washing and coating pre-treatment where a fast dry-down matters.
05Electronics and precision
Precision cleaning, extraction work and laboratory analysis where residue and particle control decide the result.
06Textile finishing
Dye carriers, silicone carriers, spotting agents and water-repellent garment finishes.

Solvent handling tank in an industrial washing line

Application choice decides the grade. Textile work runs on virgin high-purity solvent, while metal lines run on stabilized low-emission grades that tolerate continuous distillation and water carry-over. Tell us the machine and the soil, and we will match the grade to it.

Technical And Compliance

Handling And Compliance

Perchloroethylene is a hazardous substance and it is treated as one. Everything that follows is drawn from the published product data for the Dow DOWPER grades and is reflected in the documents that travel with the shipment.

Not flammable by design. No flash point, no auto-ignition temperature and no explosive limits in air, so the storage restrictions that apply to combustible solvents do not apply here.
GHS hazard statements. H315, H317, H319, H336, H351 and H411 apply, which is why protective equipment, controlled ventilation and trained handling are part of every application.
Transport classification. UN 1897 under ADR class 6.1D for non-flammable, acutely toxic substances. Classification and packing documents are prepared for every consignment.
Workplace exposure limits. The published reference values are 25 ppm as an ACGIH TLV and 50 ppm in the UK EH40/98 list; closed machines with solvent recovery keep operators far below these levels.
Environmental profile. Perchloroethylene does not deplete the ozone layer and has a very low impact on smog formation, global warming and acid rain compared with hydrocarbon solvents.
Application limits. Not recommended for open cold cleaning, and heat-sensitive components need a different solvent selected for their service temperature.

TDS SDS Batch COA Dangerous goods declaration

Why Ascent Group

Supply You Can Audit

Ascent Group Co., Ltd has spent two decades building a chemical supply system that is documented end to end, so that a buyer of Dow perchloroethylene can verify the material, the documentation and the delivery instead of taking them on trust.

80+

Export countries served. Regional warehousing and logistics partners dispatch orders across more than 80 countries.

One supply system

Covering general-purpose and engineering plastics, fine solvents and basic chemical raw materials.

Certified quality

Quality systems built on ISO 9001, ISO 14001 and REACH.

In-house laboratory

HPLC, GC-MS and NMR instruments carry out formulation work and multi-stage laboratory testing under ISO 9001-certified processes.

Batch traceability

Retained samples are archived for each production lot, so a batch can still be re-checked against a complaint.

40%

Emission reduction achieved by the site environmental programme.

100%

Water recycled through closed-loop systems and energy recovery.

Two decades

Of chemical supply work, with long-term relationships with producers including Sinopec, Haiwan Chemical, Lihuayi Group, Luxi Chemical and Yulong Petrochemical.

Packaging And Delivery

From Order To Consignment

Perchloroethylene is transported as a dangerous good, so packing and paperwork are part of the product rather than an afterthought. The sequence below is the one every shipment follows.

1 Grade selection
Tell us the process, the machine and the consumption rate. We match the Dow perchloroethylene grade and the packing size to the duty, and confirm the quantity for a written quotation.
2 Documentation
Technical data sheet, safety data sheet and a batch certificate of analysis are issued with the consignment, and retained samples are archived for each production lot.
3 Packing and loading
Original sealed steel drums at 300 kg and 330 kg net and ISO tanks for bulk volumes are the standard packings; DOWPER Pure Power Solvent is also used with the closed SAFE-TAINER units of 15 L and 33 L.
4 Freight and customs
Dangerous goods declarations are prepared for UN 1897 under ADR class 6.1D, and the load is routed to the agreed port or destination with the supporting documents in place.

Blue steel drums stacked on pallets before dispatch

Technical Support

Frequently Asked Questions

The questions buyers of DOWPER Pure Power Solvent and Dow PCE low emission grade ask most often, answered with the published data rather than with sales language.

What separates DOWPER Pure Power Solvent from a standard Dow PCE drum?
DOWPER Pure Power Solvent is a virgin perchloroethylene with purity above 99.95% and a dedicated stabilization package for textile cleaning, which keeps the solvent stable for longer and reduces the frequency of machine restabilization. A standard grade is the general dry-cleaning and multi-purpose perchloroethylene with the same basic chemistry and a different stabilizer balance.
Is Dow PCE low emission grade suitable for closed vapour degreasing?
That is the working assumption behind the grade. Its stabilizer package resists acidification, water humidity and light metals including aluminium, so the solvent stays usable across continuous distillation and re-use cycles, and it is normally handled in closed machines where solvent is recovered.
Which packing sizes are available for dow perchloroethylene?
Sealed steel drums at 300 kg and 330 kg net are the standard export packings, with ISO tanks available for bulk volumes. DOWPER Pure Power Solvent is also used with closed SAFE-TAINER units of 15 L and 33 L for closed-loop transfer.
Which documents accompany the material?
Every consignment is supported by a technical data sheet, a safety data sheet and a batch certificate of analysis. Retained samples are archived for each production lot, so a batch can still be re-checked against a complaint.
How is perchloroethylene classified for transport?
Perchloroethylene is carried as UN 1897 under ADR class 6.1D for non-flammable, acutely toxic substances, and it is classified under customs tariff heading 29032300. Dangerous goods declarations are prepared for each shipment.
What is the purity of DOWPER Pure Power Solvent?
Purity is above 99.95% for the DOWPER Pure Power grade, with alkalinity as sodium hydroxide of 15 to 30 ppm, and the general dow perchloroethylene grade is supplied at 99.9% or higher. The batch certificate of analysis states the figure for the delivered batch.
Do you ship outside China?
Regional warehousing and logistics partners dispatch orders across more than 80 countries.

Contact

Talk To Our Team

Send the grade, the packing and the destination, and you will get a written quotation with the documents, the lead time and the freight terms. Kristy Chen handles Dow perchloroethylene enquiries directly.

Telephone +8618018036652
Email sales6@ascent-chem.com
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Kristy Chen — Sales