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සැකිල්ල:Chembox DeltaHc
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Names | |||
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Preferred IUPAC name
Benzoic acid[1] | |||
Systematic IUPAC name
Benzenecarboxylic acid | |||
වෙනත් නාම
Carboxybenzene; E210; Dracylic acid; Phenylmethanoic acid | |||
Identifiers | |||
CAS number | {{{value}}} | ||
3D model (JSmol) |
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3DMet | |||
Beilstein Reference |
636131 | ||
ChEBI | CHEBI:{{{value}}} | ||
ChEMBL |
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ChemSpider | |||
DrugBank | |||
ECHA InfoCard | 100.000.562 | ||
EC Number |
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E number | E210 (preservatives) | ||
Gmelin Reference |
2946 | ||
KEGG | {{{value}}} | ||
MeSH | {{{value}}} | ||
PubChem | {{{value}}} | ||
RTECS number | {{{value}}} | ||
UNII | |||
CompTox Dashboard (EPA) |
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InChI | |||
SMILES | |||
Properties | |||
Molecular formula | C7H6O2 | ||
Molar mass | 122.12 g mol−1 | ||
Appearance | Colorless crystalline solid | ||
Odor | faint, pleasant odor | ||
Density | 1.2659 g/cm3 (15 °C) 1.0749 g/cm3 (130 °C)[2] | ||
Melting point |
122 °C, 395 K, 252 °F | ||
Boiling point |
250 °C, 523 K, 482 °F | ||
Solubility in water | 1.7 g/L (0 °C) 2.7 g/L (18 °C) 3.44 g/L (25 °C) 5.51 g/L (40 °C) 21.45 g/L (75 °C) 56.31 g/L (100 °C)[2][3] | ||
Solubility | soluble in acetone, benzene, CCl4, CHCl3, alcohol, ethyl ether, hexane, phenyls, liquid ammonia, acetates | ||
Solubility in methanol | 30 g/100 g (-18 °C) 32.1 g/100 g (-13 °C) 71.5 g/100 g (23 °C)[2] | ||
Solubility in ethanol | 25.4 g/100 g (-18 °C) 47.1 g/100 g (15 °C) 52.4 g/100 g (19.2 °C) 55.9 g/100 g (23 °C)[2] | ||
Solubility in acetone | 54.2 g/100 g (20 °C)[2] | ||
Solubility in olive oil | 4.22 g/100 g (25 °C)[2] | ||
Solubility in 1,4-Dioxane | 55.3 g/100 g (25 °C)[2] | ||
log P | 1.87 | ||
Vapor pressure | 0.16 Pa (25 °C) 0.19 kPa (100 °C) 22.6 kPa (200 °C)[4] | ||
Acidity (pKa) | 4.202[5] | ||
Magnetic susceptibility (χ) |
-70.28·10−6 cm3/mol | ||
Solubility product, Ksp | 1.5397 (20 °C) 1.504 (132 °C)[2] | ||
Viscosity | 1.26 mPa (130 °C) | ||
Structure | |||
Crystal structure | Monoclinic | ||
Molecular shape | planar | ||
Dipole moment |
1.72 D in Dioxane | ||
Thermochemistry | |||
Std enthalpy of formation ΔfH |
-385.2 kJ/mol[2] | ||
Std molar entropy (S⦵298) |
167.6 J/mol·K[2] | ||
Heat capacity (C) |
146.7 J/mol·K[4] | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards |
Irritant | ||
GHS labelling: | |||
Pictograms |
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Signal word |
Danger | ||
Hazard statements |
H318, H335[6] | ||
Precautionary statements |
P261, P280, P305+P351+P338[6] | ||
Flash point | {{{value}}} | ||
Autoignition temperature |
571 °C (1,060 °F; 844 K)[7] | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
1700 mg/kg (rat, oral) | ||
Safety data sheet (SDS) | JT Baker | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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බෙන්සොයික් අම්ලය, C7H6O2 (හෝ C6H5COOH), යනු අවර්ණ ස්ඵටිකමය ඝනයක් වන අතර සරල ඇරෝමැටික කාබොක්සිලික් අම්ලයකි. බෙන්සොයික් අම්ලය සොබාවයෙන් බොහෝ ශාක වල හට ගනී.[8] බොහෝ ද්විතීයික පරිවෘත්තජයවල ජෛවසංස්ලේෂණයේ දී අතරමැදියක් ලෙස ක්රියා කරයි. බෙන්සොයික් අම්ලවල ලවණ අහර පිරිරැක්මට යොදන අතර එය නෙක් වෙනත් කාබනික ද්රව්යයන්හි කාර්මික සංස්ලේෂණයෙහි වැදගත් පෙරයෙදුමක් වෙයි. බෙන්සොයික් අම්ලවල ලවණ හා එස්ටර බෙන්සොඒට ලෙස හඳුන්වනු ලැබෙයි.
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