Difference between Flash Point and Ignition Temperature:

There are various methods and terms used for measuring the flammability and combustibility of a substance. Two of these terms are flash point and ignition temperature. Although they share similarities, they are very different terms.

Flash Point

The flash point is the lowest temperature at which a substance vaporizes into a gas, which can be ignited with the introduction of an external source of fire. There are two main methods of measuring a flash point – namely, open cup and closed up.

Open cup flash point testing occurs when the substance is placed into a vessel which is open to the outside atmosphere. Its temperature is then gradually raised, and an ignition source is passed over the top of it at intervals. Once the substance “flashes” or becomes ignited, it has reached its flash point.

Closed cup flash point testing is conducted inside a sealed vessel and the ignition source is introduced into the vessel. As a result, the substance is not exposed to the elements outside of the vessel, which can have an interfering effect on the results of the test. This, in turn, also leads to lower flash points, because the heat is trapped inside. Because it is lower, the flash point is also safer for widespread use, and as such is more generally accepted.

Ignition Temperature

Unlike with flash points, the ignition temperature does not need an ignition source. In other words, the ignition temperature is the lowest temperature at which a volatile material will be vaporised into a gas which ignites without the help of any external flame or ignition source. As a result, the ignition temperature is of course higher than the flash point.

Typically, ignition temperatures are measured by placing the substance in a half-litre vessel and inside a temperature-controlled oven. The current standard procedures for such tests are outlined in ASTM E659.

It should be stressed, however, that both of these terms are not fundamental, unvarying properties belonging to the substances. Rather they are empirical results, gleaned through laboratory testing, which can vary according to the equipment used, the method chosen and the environment in which it is conducted.

Comments

Team Work - Meaning and Tips for better Team Work

A single brain is not always capable of making key decisions on its own. To come up with an efficient solution, an individual requires the help and advice of others. A team is established when individuals get together on a common platform with the common goal of completing a task. To guarantee optimum compatibility, team members should ideally come from similar backgrounds and have a single aim. To provide their best, the team members must complement each other and function as a single unit in tight cooperation. "There is no I in Team Work," as the saying goes, and each member must put the needs of his team first. Personal interests must take a second seat. Any team's performance is directly proportionate to the relationship between its members and their combined efforts. What is the definition of teamwork? Teamwork is defined as the sum of each team member's efforts toward the fulfilment of the team's goal. In other words, any team's backbone is its ability t

Scientists discover a new theory / The fundamental property of light – 150 years after Maxwell

Light plays a vital role in our everyday lives and technologies based on light are all around us. So we might expect that our understanding of light is pretty settled. But scientists have just uncovered a new fundamental property of light that gives new insight into the 150-year-old classical theory of electromagnetism and which could lead to applications manipulating light at the nanoscale. It is unusual for a pure-theory physics paper to make it into the journal Science. So when one does, it’s worth a closer look. In the new study, researchers bring together one of physics' most venerable set of equations – those of James Clerk’s Maxwell’s famous theory of light – with one of the hot topics in modern solid-state physics: the quantum spin Hall effect and topological insulators . To understand what the fuss is about, let’s first consider the behaviour of electrons in the quantum spin Hall effect. Electrons possess an intrinsic spin as if they were tiny spinning-tops,

19 Types Of Content Writing Services For Your Business

It’s hard to know which type of content writing service is the best for your business. There are so many different types of content writing services out there that it’s easy to get confused. You end up wondering if you’re choosing the right one for you. In this post, we’ll get rid of this confusion, once and for all. I’m going to list out the different kinds of writing services you could use. By the end of this article, you’ll know whether you need a copywriter, a content writer, or a social media marketer and how they can help you achieve your business goals. This post is also useful for writers who want to hone their writing skills in a specific area. Let’s dive in and learn what types of content writing services exist and when you should use them. (Bonus – if you want to hire the top 1% of writers, go to the bottom to learn how). Types of Content Writing Services As we go through the list of content writing services, you will find that many of them overlap. That’s perfectly

The LimitlessX - Get Tech Science News around the Globe

Search This Blog