Author Archives: prlabpak
Laundry pods have featured in the news this week after cases of people eating them in what’s being referred to as the ‘Tide Pod Challenge’. In case you didn’t already realise that this is a pretty terrible idea, this graphic looks at the chemical reasons why you really don’t want them anywhere near your mouth
|The Chemistry of Laundry pods|
Eating laundry pods is particularly risky since the detergents are at a higher concentration than in liquid detergents. They are highly alkaline; just as highly acidic substances can cause burns, so too can very alkaline ones. If you eat a laundry pod, you run the risk of burns to your throat and stomach from the high concentration detergent they contain. As they pop in your mouth, they can also be accidentally inhaled – definitely not good for your airway and lungs either.
In addition, eating them can also cause breathing problems. Why exactly this is is currently unclear. It seems that in some laundry pod formulations, a sedative effect is seen when they are ingested. This can lead to drowsiness and breathing difficulties. It’s been speculated that a solvent used in the pods, propylene glycol, might contribute. Alternatively, it might be an unknown effect of certain ethoxylated alcohols.
Laundry pods like this also contain a bitter substance to deter children from putting them in their mouths. For more information visit the full article at the excellent Compound Interest
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When is it too late to say Happy New Year? When you first meet someone after the holiday break? After the first week? Second week?
Anyway, Total Lab Supplies wishes you a Happy New Year and all the best for 2018.
If you require a catalogue then please contact us on 01744 455000 or e-mail email@example.com
We can supply a wide range of branded chemicals from Fisher, Acros, Alfa, Honeywell, Fluka and more. From solvents and acids to more specialist chemicals. All at competitive prices. Buying these chemicals you can be assured of quality products.
Please don’t hesitate to get in touch with us and we’ll help you find what you’re looking for.
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for a liquid soap was issued to William Sheppard of New York City (No. 49,561).
The patent described his “discovery that by the addition of comparatively
small quantities of common soap to a large quantity of spirits of ammonia or hartshorn
is thickened to the consistency of molasses, and a liquid soap is obtained of
superior detergent qualities.” The proportions given were to dissolve one
pound of common soap in water or steam, and then add 100-lbs of ammonia such
that the liquid thickens to the consistency of molasses. The product was
expected to be useful for both domestic and manufacturing purposes. (Hartshorn
is an ancient name for an aqueous solution of ammonia).
|Decorative soaps, by Phanton at English Wikipedia (Transferred from en.wikipedia to Commons.) [Public domain], via Wikimedia Commons|
allows insoluble particles to become soluble in water, so they can then be
rinsed away. For example: oil/fat is insoluble in water, but when a couple of
drops of dish soap are added to the mixture, the oil/fat dissolves in the
water. The insoluble oil/fat molecules become associated inside micelles, tiny
spheres formed from soap molecules with polar hydrophilic (water-attracting)
groups on the outside and encasing a lipophilic (fat-attracting) pocket, which
shields the oil/fat molecules from the water making it soluble. Anything that
is soluble will be washed away with the water.
determines the kind of soap product. Sodium soaps, prepared from sodium
hydroxide, are firm, whereas potassium soaps, derived from potassium hydroxide,
are softer or often liquid. Historically, potassium hydroxide was extracted
from the ashes of bracken or other plants. Lithium soaps also tend to be
hard—these are used exclusively in greases.
acids. Traditionally they have been made from triglycerides (oils and fats).
Triglyceride is the chemical name for the triesters of fatty acids and
glycerin. Tallow, i.e., rendered beef fat, is the most available triglyceride
from animals. Its saponified product is called sodium tallowate. Typical
vegetable oils used in soap making are palm oil, coconut oil, olive oil, and
laurel oil. Each species offers quite different fatty acid content and hence,
results in soaps of distinct feel. The seed oils give softer but milder soaps.
Soap made from pure olive oil is sometimes called Castile soap or Marseille
soap, and is reputed for being extra mild. The term “Castile” is also
sometimes applied to soaps from a mixture of oils, but a high percentage of
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|Full moon as seen from Earth’s Northern Hemisphere, by Gregory H. Revera (Own work) [CC BY-SA 3.0 (http://ift.tt/HKkdTz) or GFDL (http://ift.tt/KbUOlc)%5D, via Wikimedia Commons|
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|A representation of the 3D structure of the protein myoglobin showing turquoise α-helices. By AzaToth (self made based on PDB entry) [Public domain], via Wikimedia Commons|
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|Joseph Priestley, by Charles Turner [Public domain], via Wikimedia Commons|
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|Full Moon photograph taken 10-22-2010 from Madison, Alabama, USA. By Gregory H. Revera (Own work) [CC BY-SA 3.0 (http://ift.tt/HKkdTz) or GFDL (http://ift.tt/KbUOlc)%5D, via Wikimedia Commons|
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|Mars in natural colour in 2007. By ESA – European Space Agency & Max-Planck Institute for Solar System Research for OSIRIS Team ESA/MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA [CC BY-SA 3.0-igo (http://ift.tt/1wBCVB0)%5D, via Wikimedia Commons|
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|A small cup of coffee. By Julius Schorzman (Own work) [CC BY-SA 2.0 (http://ift.tt/KcQbXG)%5D, via Wikimedia Commons|
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|Total Solar Eclipse. I, Luc Viatour [GFDL (http://ift.tt/KbUOlc), CC-BY-SA-3.0 (http://ift.tt/gc84jZ) or CC BY-SA 2.5-2.0-1.0 (http://ift.tt/Xoxvyb)%5D, via Wikimedia Commons|
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