Difference between revisions of "Methylparaben"
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== Description == | == Description == | ||
| − | Fine, white needle-like crystalline powder that is used as a [ | + | Fine, white needle-like crystalline powder that is used as a |
| − | + | [[preservative|preservative]] in paints, food, beverages, and cosmetics. Methylparaben inhibits | |
| + | [[mold%20%28fungus%29|mold]] growth. | ||
| + | [[[SliderGallery rightalign|methylparaben.jpg~Chemical structure]]] | ||
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
methyl hydroxy benzoate; methyl p-hydroxybenzoate; 4-hydroxybenzoic acid methyl ester; Nipagin M; Tegosept M; Methyl Chemosept; Methyl Parasept | methyl hydroxy benzoate; methyl p-hydroxybenzoate; 4-hydroxybenzoic acid methyl ester; Nipagin M; Tegosept M; Methyl Chemosept; Methyl Parasept | ||
| − | + | == Risks == | |
| − | |||
| − | == | ||
| + | * Toxic. | ||
| + | * Maximum concentration in food is limited to 0.1%. | ||
| + | * ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=AC126961000&productDescription=METHYL+P-HYDROXYBENZOATE+100GR&vendorId=VN00032119&countryCode=US&language=en SDS] | ||
| + | ==Physical and Chemical Properties== | ||
Soluble in ethanol, acetone, ether and warm oil. Slightly soluble in water, benzene and carbon tetrachloride. | Soluble in ethanol, acetone, ether and warm oil. Slightly soluble in water, benzene and carbon tetrachloride. | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 131 | + | | 131 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.36 | + | | 1.36 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| Line 31: | Line 35: | ||
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 270-280(dec) | + | | 270-280 C (dec) |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
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| − | |||
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| − | |||
| − | |||
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* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
Latest revision as of 13:44, 1 October 2022
Description
Fine, white needle-like crystalline powder that is used as a
Preservative in paints, food, beverages, and cosmetics. Methylparaben inhibits
mold growth.
Synonyms and Related Terms
methyl hydroxy benzoate; methyl p-hydroxybenzoate; 4-hydroxybenzoic acid methyl ester; Nipagin M; Tegosept M; Methyl Chemosept; Methyl Parasept
Risks
- Toxic.
- Maximum concentration in food is limited to 0.1%.
- ThermoFisher: SDS
Physical and Chemical Properties
Soluble in ethanol, acetone, ether and warm oil. Slightly soluble in water, benzene and carbon tetrachloride.
| Composition | CH3OOCC6H4OH |
|---|---|
| CAS | 99-76-3 |
| Melting Point | 131 C |
| Density | 1.36 g/ml |
| Molecular Weight | mol. wt. = 152.16 |
| Boiling Point | 270-280 C (dec) |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
- Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 6182