129-66-8 Usage
Description
2,4,6-Trinitrobenzoic Acid, also known as picric acid, is an organic compound with the chemical formula C?H?N?O?. It is an orthorhombic crystalline solid that is slightly soluble in water and benzene, but soluble in alcohol, ether, and acetone. Upon heating, it sublimates with decomposition, forming carbon dioxide and trinitrobenzene.
Uses
Used in Explosive Compositions:
2,4,6-Trinitrobenzoic Acid is used as a component in explosive compositions for its high explosive power and sensitivity to impact and friction. Its use in this application is due to its ability to release a large amount of energy upon detonation, making it a valuable component in the production of explosives.
Used in Chemical Synthesis:
2,4,6-Trinitrobenzoic Acid is used as a starting material in the preparation of various chemical compounds, such as trimethylbenzoyl chloride. Its use in this application is due to its reactivity and the versatility of the nitro groups, which can be further modified or functionalized to produce a range of different products.
Used in Analytical Chemistry:
2,4,6-Trinitrobenzoic Acid is used as a reagent in analytical chemistry for the detection and quantification of certain substances. Its use in this application is due to its ability to form colored complexes with various analytes, allowing for the identification and measurement of these substances in a sample.
Used in Dye Production:
2,4,6-Trinitrobenzoic Acid is used in the production of dyes, particularly for the synthesis of picric acid dyes. Its use in this application is due to its ability to form colored compounds, which can be used to create a variety of dyes with different shades and properties.
Used in Pharmaceutical Industry:
2,4,6-Trinitrobenzoic Acid is used in the pharmaceutical industry for the synthesis of certain drugs and drug intermediates. Its use in this application is due to its reactivity and the potential for further chemical modification, allowing for the development of new therapeutic agents.
Used in Research and Development:
2,4,6-Trinitrobenzoic Acid is used in research and development for the study of its chemical properties, reactivity, and potential applications in various fields. Its use in this application is due to its unique structure and the possibility of exploring new reactions and transformations involving this compound.
Hazard
Dangerous, explodes by heat or shock.
Safety Profile
An explosive. A hazard
in preparation. Reacts with heavy metals to
form heator impact-sensitive explosive
salts. When heated to decomposition it
emits toxic fumes of NOx. See also NITRO
COMPOUNDS of AROMATIC
HYDROCARBONS and EXPLOSIVES ,
HIGH.
Purification Methods
Crystallise the acid from distilled H2O. Dry in a vacuum desiccator. The amide has m 264o (from EtOH). [Beilstein 9 H 417, 9 I
Check Digit Verification of cas no
The CAS Registry Mumber 129-66-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 129-66:
(5*1)+(4*2)+(3*9)+(2*6)+(1*6)=58
58 % 10 = 8
So 129-66-8 is a valid CAS Registry Number.
InChI:InChI=1/C7H3N3O8/c11-7(12)6-4(9(15)16)1-3(8(13)14)2-5(6)10(17)18/h1-2H,(H,11,12)
129-66-8Relevant articles and documents
5,5′-Bis(2,4,6-trinitrophenyl)-2,2′-bi(1,3,4-oxadiazole) (TKX-55): Thermally Stable Explosive with Outstanding Properties
Klap?tke, Thomas M.,Witkowski, Tomasz G.
, p. 357 - 360 (2016)
The novel, thermally stable explosive 5,5′-bis(2,4,6-trinitro-phenyl)-2,2′-bi(1,3,4-oxadiazole) (TKX-55) is reported. This compound can be prepared by means of a facile synthetic procedure and shows outstanding properties (detonation velocity, detonation pressure, sensitivity toward mechanical stimuli, and temperature of decomposition). TKX-55 was isolated and characterized by means of mass spectrometry, multinuclear (1H, 13C) NMR spectroscopy, and vibrational spectroscopy (IR and Raman). The structure in the crystalline state was determined by low-temperature single-crystal X-ray diffraction. From the calculated standard molar enthalpy of formation (CBS-4M) and the densities, the Chapman-Jouguet detonation properties were predicted by using the EXPLO5 V6.01 thermochemical computer code. The sensitivity of TKX-55 towards impact, friction, and electrostatic discharge was determined. The shock reactivity (explosiveness) of TKX-55 was measured by applying the small-scale shock reactivity test.
Effect of medium acidity on the efficiency of oxidation of 2,4,6-trinitrotoluene to 2,4,6-trinitrobenzoic acid
Мikhalchenko,Leibzon,Leonova, M. Yu.,Gultyai
, p. 2216 - 2219 (2016)
An effect of boric acid additives on oxidation of 2,4,6-trinitrotoluene (TNT) to 2,4,6-trinitrobenzoic acid (TNBA) with chromic anhydride in concentrated (96—100%) H2SO4 has been studied. In the presence of tetrahydrosulfatoboric acid HB(HSO4)4 formed in situ (up to 5 mol.%) or added as a preliminary prepared solution (up to 1 mol. %), TNT is selectively oxidized to TNBA in the yields up to 95—99%. The mechanism including formation of TNT dication as a key step of its oxidation at the methyl group has been suggested.
Synthesis method of high-purity phloroglucinol compound
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Paragraph 0017, (2021/06/09)
The invention discloses a one-step chemical catalytic synthesis method of high-purity phloroglucinol by taking 3,5-dichlorophenol as a starting material and taking strong base and a catalyst as auxiliary materials. Through the method, the phloroglucinol compound with high molar yield, high purity and low cost can be effectively synthesized.