Synthetic Sea Water

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$1,004.30$5,409.41

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Buy Synthetic (Artificial) Sea Water Online From Leading USA Chemical Suppliers

Synthetic sea water (ASTM D1141-98) is used to simulate the theoretical content of natural sea water. Also known as artificial sea water, it’s a solution of dissolved mineral salts found in the sea, but it has the advantage of being reproducible.

  • Chemical name – Synthetic Sea Water (ASTM D1141-98 formulation)
  • Synonyms – Artificial Sea Water, Simulated Seawater Solution
  • Appearance – Clear, colorless liquid
  • Odor – Odorless
  • pH (approximate) – 8.0 ± 0.2 at 25°C
  • Density – ~1.025 g/cm³
  • Salinity – ~35 g/L (similar to natural seawater)
  • Solubility – Fully miscible with water
  • Main components – NaCl, MgCl₂, Na₂SO₄, CaCl₂, KCl, NaHCO₃, KBr, SrCl₂, H₃BO₃

Synthetic sea water maintains consistent quality and composition regardless of environmental changes, making it an excellent choice for repeatable experimental and industrial testing.

What is Synthetic Sea Water Used For?

Our customers use synthetic sea water for a number of applications. For example, it may be used for laboratory and scientific applications such as analysis and testing.

Another common use is to test the resistance of a substance from sea water without the need to actually go to sea. Substances could include protective coatings, paints, metals, plastics, and resins. Artificial sea water is frequently used in research and development applications.

Other applications include:

  • Corrosion and material testing – Assessing the engineering durability of coatings, paints, and metals exposed to marine environments
  • Product development – Testing marine-grade plastics, composites, and sealants for long-term resistance to saltwater exposure
  • Research and analysis – Supporting marine biology and chemical/environmental studies under repeatable laboratory conditions
  • Calibration and reference solutions – Providing a standard medium for instruments and experiments that require a seawater-like environment
  • Aquatic simulation and testing – Used in aquaculture systems, oceanographic research, and bioassay development, where seawater quality must remain consistent

Safety & Storage Recommendations

While synthetic sea water is non-toxic and non-flammable, proper storage and handling help maintain product quality and integrity.

  • Storage conditions – Store in a sealed container in a cool, dry place away from direct sunlight or contamination sources
  • Temperature stability – Maintain at ambient room temperature of 50-77°F (10–25°C)
  • Container materials – Suitable for use with HDPE, polypropylene, or glass containers
  • Avoid contamination – Do not mix with other chemicals or solutions to preserve composition accuracy

Always refer to the product’s Material Safety Data Sheet (MSDS) before use.

Why Order From ReAgent?

ReAgent is a multinational company with almost 50 years of chemical manufacturing experience. With a 100% quality guarantee on every product, we have the expertise to handle all of your business needs.

You can buy synthetic sea water from our online chemical shop in 55-, 275-, and 330-gallon containers. Order online today for delivery and enjoy discounts on bulk orders.

We also have extra, industry-leading services available on all products, including personalized labeling, customizable packaging, and the choice of specific pack sizes for chemical solutions.

On top of this, we strive to offer all our customers a friendly service. Our products are backed by a 100% quality guarantee so that you can relax and buy with confidence.

Place your order online today, or contact our technical sales team for more information. We’ll be happy to help you before, during, and after your purchase.

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Synthetic Sea Water Specification

ItemSpecification
pH @ 20°C8.10-8.20
Formulation
Sodium Chloride24.53 g/l
Magnesium Chloride 6H2O11.11 g/l
Sodium Sulphate Anhydrous4.094 g/l
Calcium Chloride 2H201.534 g/l
Strontium Chloride 6H200.042 g/l
Potassium Chloride0.695 g/l
Sodium Bicarbonate0.201 g/l
Potassium Bromide0.1 g/l
Boric Acid0.027 g/l
Sodium Fluoride0.003 g/l
Sodium Hydroxide 0.1Mto pH 8.15
Conforms to ASTM D1141-98

Synthetic Sea Water Hazards

Synthetic Sea Water Safety & Storage

Synthetic Sea Water SDS

Download our material safety data sheet (MSDS) for technical data and comprehensive information about this product.

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Synthetic Sea Water Delivery

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Delivery FAQs

How do I find out the delivery cost for my order?

If you want to find the exact delivery charge for an item or order, simply add the item or items you’re interested in to your basket and the delivery charge as well as any tax will be calculated and itemized for you. No card details are taken at this point, so you’re under no obligation to purchase water online.

How long does delivery take?

Firm delivery date within 24 hours. We always dispatch orders as soon as possible, but please note that non-stock items can take around 5 days to reach you. Please contact us before ordering if you require an estimated delivery date or see our delivery information for more information.

Do you deliver on national holidays?

Unfortunately not. Our couriers only deliver on working days from Monday to Friday.

Can you ship to locations outside of mainland US?

We cannot accept overseas orders on our website. However, in some cases, we are able to ship outside the mainland US. Please contact us for further information.

How do you calculate your delivery costs?

As many of the chemicals we supply are hazardous, we are legally obligated to use licensed couriers who are specialists in carrying such goods. These specialist couriers cost more than regular delivery services, but your order will arrive safely and legally.

Can I have a timed delivery slot?

We can offer an AM delivery service for some counties. Please contact us for information before placing your order.

Can I collect my items from your warehouse?

Yes, but please contact us to prearrange this. Depending on the quantity of hazardous chemicals you want to collect, you may need to have applicable training or a current licence to legally transport them away from our premises. We may not able to release goods without proof of this.

Can you deliver directly to my customers?

Yes, we can deliver directly to your customers with a delivery note that excludes invoice details, and we can add your logo and branding to the product labels. Contact us for more information.

Synthetic Sea Water FAQs

Where can I find the MSDS for your synthetic sea water (ASTM D1141)?

You can find a safety data sheet for synthetic sea water in the MSDS document above.

Does your synthetic sea water comply with ASTM D1141-98 standards?

What is the shelf life of your synthetic sea water?

What is the composition of your synthetic sea water?

Does your synthetic sea water contain heavy metals?

Is your synthetic sea water tested for trace metals such as Fe, Cu, Zn, and Pb?

What is the minimum quantity of synthetic sea water I can purchase?

Do you ship synthetic sea water

Can I set up a credit account for repeat orders?

Is your synthetic sea water suitable for laboratory experiments?

How consistent is the composition of your synthetic sea water between batches?

Can I get a sample of your synthetic sea water for testing?

Can I purchase the salt mixture separately and mix it with DI water myself?

Can you customize the composition of the synthetic sea water to meet specific research needs?

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Browse Our Range of Water

ASTM D1193 Type III Water

ASTM D1193 Type IV Water

Deionized Water

Demineralized Water

Distilled Water

Synthetic Sea Water

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ASTM D1193 Type III Water

ASTM D1193 Type IV Water

Deionized Water

Demineralized Water

Distilled Water

Synthetic Sea Water

Synthetic Sea Water