Difference between revisions of "Picric acid"
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== Description == | == Description == | ||
| − | A yellow acid dye. Picric acid was prepared in 1771 by Woulfe by treating [ | + | A yellow acid dye. Picric acid was prepared in 1771 by Woulfe by treating [[indigo|indigo]] with [[nitric%20acid|nitric acid]]. It was first used as a textile dye for [[wool|wool]] and [[silk|silk]]. Picric acid has poor washfastness and was replaced by naphthol dyes by the late 1800s. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | CI 10305; carbazitic acid; 2,4,6-trinitrophenol; picronitric acid; melinite; acide picrique (Fr.); | + | CI 10305; carbazitic acid; 2,4,6-trinitrophenol; picronitric acid; melinite; acide picrique (Fr.); ácido pícrico (Esp., Port.) |
| − | == | + | == Risks == |
| + | |||
| + | * Flammable solid. Flash point = 150 C. Explosive at 300C. | ||
| + | * Harmful by ingestion, inhalation, and skin absorption. | ||
| + | * Fisher Scientific: [https://www.fishersci.com/store/msds?partNumber=SP9200100&productDescription=PICRIC+ACID%2C+SAT%2C+100ML&vendorId=VN00006705&countryCode=US&language=en SDS] | ||
| + | ==Physical and Chemical Properties== | ||
Soluble in water, ethanol, ether | Soluble in water, ethanol, ether | ||
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|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 122 | + | | 122 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 1.77 | + | | 1.77 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
| mol. wt. = 229.11 | | mol. wt. = 229.11 | ||
|} | |} | ||
| + | Contact causes irritation. | ||
| − | == | + | ==Resources and Citations== |
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| − | A.Scharff, "Synthetic dyestuffs for textiles and their fastness to washing" in ICOM Preprints, Lyon, 1999. p.654-660.- | + | * A.Scharff, "Synthetic dyestuffs for textiles and their fastness to washing" in ICOM Preprints, Lyon, 1999. p.654-660.- |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 11:19, 27 September 2022
Description
A yellow acid dye. Picric acid was prepared in 1771 by Woulfe by treating Indigo with Nitric acid. It was first used as a textile dye for Wool and Silk. Picric acid has poor washfastness and was replaced by naphthol dyes by the late 1800s.
Synonyms and Related Terms
CI 10305; carbazitic acid; 2,4,6-trinitrophenol; picronitric acid; melinite; acide picrique (Fr.); ácido pícrico (Esp., Port.)
Risks
- Flammable solid. Flash point = 150 C. Explosive at 300C.
- Harmful by ingestion, inhalation, and skin absorption.
- Fisher Scientific: SDS
Physical and Chemical Properties
Soluble in water, ethanol, ether
| Composition | C6H3(NO2)3O |
|---|---|
| CAS | 88-89-1 |
| Melting Point | 122 C |
| Density | 1.77 g/ml |
| Molecular Weight | mol. wt. = 229.11 |
Contact causes irritation.
Resources and Citations
- A.Scharff, "Synthetic dyestuffs for textiles and their fastness to washing" in ICOM Preprints, Lyon, 1999. p.654-660.-