# What is epoxy equivalent weight?

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##### Asked by: Jason Grimes

The epoxy equivalent weight (EEW) maybe defined as: **the number of grams of epoxy resin required to give 1 mole of epoxy groups**. The epoxy value is defined as the number of moles of epoxy group per 100g resin.

## How is epoxy weight calculated?

**Resin Weight = (resin ratio / (resin ratio + hardner ratio)) x desired weight**.

- Total Weight = (Width x Height x Depth) / 1000 divide by a thousand when mesuring in millimeters.
- eg: 100mm Wide x 130mm High x 6mm Deep = 78000mm. …
- Now divide 78000/1000 to give you a capacity of 78mL, which is 78 grams.

## How is equivalent weight calculated?

Thus to find out the equivalent weight, **the atomic weight of the substance is divided by its valence**. As an example, the equivalent weight of the oxygen will be equal to 16.0 g / 2 = 8.0 g.

## What is epoxy index?

Epoxy index, a very important parameter to evaluate the quality of epoxy resins, is usually defined as **moles of epoxy groups per 100 g of epoxy resins**. This index can be used for calculating the amounts of cross-linking reagent needed in the epoxy resin formula and determining the curing degree of epoxy resins.

## What is the density of epoxy?

Epoxy resin has modulus of 3.42 GPa, and possess density of **1100 kg/m3**.

## What is meant by equivalent weight?

equivalent weight, in chemistry, **the quantity of a substance that exactly reacts with, or is equal to the combining value of, an arbitrarily fixed quantity of another substance in a particular reaction**.

## What is equivalent formula?

Using the formula: **Eq = MW / n**. Eq = equivalent weight. MW = atomic or molecular weight in g/mol, from periodic table. n = no. of equivalents.

## Why is equivalent weight used?

Equivalent weight is defined as the mass of one equivalent of a given substance that will combine with or displace a fixed quantity of another substance. It’s useful in chemistry because it can be used **to make chemically different molecules with different mass equal**.

## What is meant by 1 gram equivalent?

In chemistry, equivalent weight (also known as gram equivalent) is **the mass of one equivalent**, that is the mass of a given substance which will combine with or displace a fixed quantity of another substance.