Nettle sting

Teeth decay after eating sugar, and one of the first metabolites from sugar is lactic acid Rubbing a dock leaf (which contains an organic base) on the site of a nettle sting (which contains acid) will neutralize the acid and relieve the pain... [Pg.234]

Why is a nettle sting more painful than a bum from ethanoic acid ... [Pg.253]

In summary, the word acid is better applied to methanoic acid than to ethanoic acid, since it is more acidic, and so methanoic acid in a nettle sting is more able to damage the skin than the ethanoic acid in vinegar. [Pg.254]

Why does a dock leaf bring relief after a nettle sting ... [Pg.261]

We first met nettle stings on p. 253, where methanoic ( formic ) acid was identified as the active toxin causing the pain. Like its... [Pg.261]

Worked Example 6.10 The methanoic acid from a nettle sting is extracted into 50 cm3 of water and neutralized in the laboratory by titrating with sodium hydroxide solution. The concentration of NaOH is 0.010 mol dm 3. The volume of NaOH solution needed to neutralize the acid is 34.2 cm3. What is the concentration c of the acid ... [Pg.264]

Mexico. Ethanol (95%) extract of the stem is used as a mouthwash for toothaches. The extract is rubbed on affected area of nettle stings ° . [Pg.439]

Trillium, Beth Root, birthroot, wake-robin, stinking Benjamin) Urtica gracilis (Nettle, stinging nettle)... [Pg.138]

Combined with other agents, they are of some value in piles and diarrhea. The fresh juice will give relief from insect and nettle stings. [Pg.74]

The use of chemicals to dispatch enemies is not the sole prerogative of humans. Animals and plants have also adopted what is known as chemical warfare. Both animals and plants, as well as bacteria and fungi, can produce and contain some of the deadliest chemicals for the purpose of discouraging a predator or killing a potential meal. We come across such poisons in our everyday hves in the form of ant bites and wasp, bee, and nettle stings. In some countries the indigenous plants and animals may be especially hazardous, as we shall discover in Chapter 6. [Pg.4]

Other chemicals may after repeated exposure cause more subtle effects on the skin such as allergic reactions. Skin sensitization can be caused by nickel in jewellery or the constituents of some washing powders. Sensitization of the skin leading to allergic, contact dermatitis can be very serious as well as disfiguring and is the most common industrial disease (see Chapter 7). Some natural toxicants, such as nettle sting (formic acid) and the very potent substances in the plant poison ivy, can be skin irritants. [Pg.13]

Common Names Hoaiy Nettle, Stinging Nettle Poison Acetylcholine Dosage i/.ioz(2G) Sting... [Pg.60]

H-COOH methanoic (formic) acid — nettle stings... [Pg.41]

But there are plenty of others. For example, lemon juice contains citric acid, ant and nettle stings contain methanoic acid and tea contains tannic acid. [Pg.116]

Wasp stings are alkaline, and can be neutralised with vinegar. Why Ant stings and nettle stings contain methanoic add. How would you treat them ... [Pg.123]

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