Pronunciation: [mˈɪlk ɒv sˈʌlfə] (IPA) 
The correct spelling of the substance also known as sulfur or sublimed sulfur, is "milk of sulphur" in British English. The word "sulphur" is spelled with the "ph" digraph instead of just "f" due to its etymology. The "ph" digraph represents the /f/ sound in some Greek loanwords, such as "phobia" and "philosophy". The IPA phonetic transcription of "milk of sulphur" would be /mɪlk ʌv ˈsʌlfə/.
Milk of sulphur, also known as sulfurated lime or precipitated sulphur, is a chemical compound consisting of fine particles of sulfur dispersed in a liquid medium. It is obtained by boiling sulfur with calcium hydroxide (lime) in the presence of water, resulting in a yellowish liquid suspension with a characteristic odor of sulfur.
Milk of sulphur is commonly used in various applications, primarily in medical and veterinary fields. It possesses antifungal and antibacterial properties, making it an effective therapeutic agent for skin conditions. It is often used topically as a treatment for conditions like acne, scabies, ringworm, and other fungal infections. The fine particles of sulfur in the suspension help to dry out the affected areas and control microbial growth.
Due to its antimicrobial effects, milk of sulphur is also used in the manufacturing of certain medicated soaps and ointments. It can be added to creams, lotions, and powders to provide relief for itching and irritation caused by skin disorders. Moreover, it can serve as a component in some topical antiparasitic formulations, aiding in the treatment of parasites such as lice or mites.
In addition to its medical applications, milk of sulphur is utilized in horticulture and agriculture as a fungicide and insecticide. It helps control plant diseases and pests, preventing crop damage and promoting healthier growth.
Overall, milk of sulphur is a versatile compound with multiple applications, predominantly valued for its antifungal, antibacterial, and pesticidal properties in diverse fields.
Sulphur praecipitatum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
