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ChemFlow 40 - Antifreeze Coolant Concentrate

ChemFlow 40 - Antifreeze Coolant Concentrate

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Next Day Free Shipping is available to UK Customers Only
5.00 KGS
Free Shipping
D3306/D4656 ASTM
£17.78 (Inc. VAT)
£14.82 (Ex. VAT)

Chemflow 40 Antifreeze Concentrate

ChemFlow 40 is a 'British-Standard antifreeze Coolant' composed of Mono Ethylene Glycol which uses Organic Acid Inhibitor Technology in combination with silicate and is free from nitrites, amines, phosphates, borates to obtain good protection of all hard metals in the cooling system and engine. ChemFlow 40 is neutral in relation to gaskets and hoses and has good resistance against foam.  Chemflow 40 is an engine coolant concentrate (antifreeze) based on mono ethylene glycol, containing no nitrites, amines or phosphates (NAP free). This product is suitable for both petrol and diesel engines, carefully chosen additives give the following properties in aqueous mixtures.

Benefits of Chemflow 40 
  • Thermal characteristics that permit effective engine cooling without boiling.
  • Anticorrosion protection of all metals and alloys used in the cooling system of modern vehicles.
  • Protection against frost, depending on the concentration chosen.
  • Compatibility with rubber and plastics used in the cooling system.
  • Excellent antifoaming characteristics.
  • Meets most International and European Standards.

ChemFlow 40 antifreeze coolant can be used throughout the year in all cooling systems in petrol and diesel engines. Thanks to the balanced additive package and high quality Mono Ethylene Glycol, this standard quality coolant belongs to the highest quality in the market. ChemFlow 40 antifreeze coolant provides year-round frost- and corrosion protection and should be used undiluted in a cooling system.

ChemFlow 40 antifreeze coolant is recommended for use in cooling systems of all types of liquid cooled automotive and industrial internal combustion engines. Always refer to the OEM's manual for recommended antifreeze coolant type.

Fleet trials have shown that when used at the correct concentration coolants based on Organic Acid Inhibitor Technology continue to provide effective corrosion protection for up to 250,000 km for passenger cars and 500,000km in commercial vehicles.


Chemflow 40 complies with the following quality standards:

  • AFNOR NF R15-601 (France)
  • AS 2108 (Australia)
  • ASTM D3306 (USA)
  • BS 6580 : 2010 (UK)
  • CUNA NC 956-16 (Italy)
  • ONORM V 5123 (Austria)
  • ChemFlow 40 successfully passes the FVV Heft R443 tests (Germany)
  • SAE J 1034 (USA)
  • UNE 26-361 (Spain)

These specifications as well as many years of practical experience in the field have demonstrated that Chemflow 40 engine coolant concentrate is suitable for use with all type of cars currently manufactured in Europe

Freeze Protection 
Dilution Rate of Chemflow 40 Antifreeze                            Performance
25% Chemflow 40 / 75% DI Water                                    -12°C
33% Chemflow 40 / 66% DI Water -22°C
40% Chemflow 40 / 60% DI Water -27°C
50% Chemflow 40 / 50% DI Water -40°C
60% Chemflow 40 / 40% DI Water -56°C


Chemflow 40 is a concentrated product and should be diluted for use with good quality water. Chemiphase recommends that for optimum performance distilled or deionized water is used. The freeze protection afforded by the various dilutions is detailed in the table above: In order to provide a satisfactory level of corrosion protection it is recommended to use at least 33% (1:2) volume of Chemflow 40 in the coolant solution. In line with most car manufacturers Chemiphase recommends a 50% (1:1) volume solution for optimum performance. For cold climates use 67% (2:1) volume, concentrations above 67% volume are not recommended and give no advantage.

Properties & Test methods of Antifreeze Coolant
  • Typical values: Density @ 20°C ASTM D1122 1068 kg/m3
  • Freezing point @ 40% antifreeze & 60% water ASTM D1177 -27°C

Although it is always recommended to use deionized or demineralized water to dilute antifreeze, Chemflow 40 is formulated to be able to cope with different water qualities and is compatible with hard water. Chemflow 40 is compatible with all types of plastics and rubbers used in engine coolant systems. Chemflow 40 is fully miscible with other coolants and can be safely mixed with them. However, optimal performance and longevity of service can only be guaranteed by exclusive use of Chemflow 40.

ChemFlow 40 antifreeze coolant must be stored away from children.

Private Labels

Chemiphase Ltd offer 'private' label services which incorporates having your requested products manufactured and branded as your own under strict ISO 9001 procedures, ensuring the highest quality products.  All products manufactured at the plant can be labelled with your choice of company name, logo, contact details and delivered direct to site with product data sheets displaying your details and company logo.

All chemical products manufactured at Chemiphase Ltd are delivered with the  appropriate safety labels required by UK, EU and international transport and hazard regulations. 

Free Shipping Information for UK Customers

Carriage to a UK Mainland address and VAT is already included in the price.  Some types of chemicals are classified as hazardous and as such will be sent on a overnight carrier.  A signature will be required on delivery.  Once your order has been placed and the product has been shipped, you will be sent an email and text message with the tracking information included which will allow you to track the item and adjust if required.

1 Review
  • 5
    Prompt delivery

    Posted by Ronald Donaldson on 30th Jan 2022

    Just what I needed

All products manufactured by Chemiphase are developed under strict ISO 9001 conditions. Chemiphase work with industry worldwide delivering practical, cost effective solutions to resolve complex problems. If you require technical assistance, or information about our products, please contact our dedicated technical support team on: +44 (0) 1704 894808 or complete our Technical Support form.