Translations:Niacin/2/en

| Beilstein = 109591 | Gmelin = 3340 | 3DMet = B00073 | SMILES = OC(=O)c1cccnc1 | StdInChI = 1S/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9) | StdInChI_Ref =  ^Y | InChI = 1/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9) | StdInChIKey = PVNIIMVLHYAWGP-UHFFFAOYSA-N | StdInChIKey_Ref =  ^Y | InChIKey = PVNIIMVLHYAWGP-UHFFFAOYAA }} |Section2=! colspan=2 style="background: #f8eaba; text-align: center;" |Properties

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|

Chemical formula

| C₆H₅NO₂

|- | Molar mass

| 123.111 g·mol⁻¹

|- | Appearance | White, translucent crystals |-

| Density | 1.473 g cm⁻³ |- | Melting point | 237 °C; 458 °F; 510 K

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|

Solubility in water

| 18 g L⁻¹ |-

| log P | 0.219 |-

| Acidity (pK_a) | 2.0, 4.85 |-

| Isoelectric point | 4.75 |-

|

Refractive index (n_D)

| 1.4936 |-

|

Dipole moment

| 0.1271305813 D |- |Section5=! colspan=2 style="background: #f8eaba; text-align: center;" |Thermochemistry

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Std enthalpy of
formation (Δ_fH^⦵₂₉₈)

| −344.9 kJ mol⁻¹ |-

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Std enthalpy of
combustion (Δ_cH^⦵₂₉₈)

| −2.73083 MJ mol⁻¹ |- |Section6=! colspan=2 style="background: #f8eaba; text-align: center;" |Pharmacology

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|

ATC code

| C04AC01 (WHO) C10BA01 (WHO) C10AD02 (WHO) C10AD52 (WHO) |-

| License data

|

• EU EMA: by Nicotinic acid

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|

Routes of
administration

| Intramuscular, by mouth |- | colspan=2 style="text-align:left; background-color:#eaeaea;" | Pharmacokinetics: |- |- style="background:#f1f1f1;"

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Biological half-life

| 20–45 min

|- |- |Section7=! colspan=2 style="background: #f8eaba; text-align: center;" |Hazards

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| colspan=2 style="text-align:left; background-color:#eaeaea;" | GHS labelling: |-

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Pictograms

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Signal word

| Warning

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Hazard statements

| H319

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Precautionary statements

| P264, P280, P305+P351+P338, P337+P313, P501

|- | NFPA 704 (fire diamond)

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1

1

0

|- | Flash point | 193 °C (379 °F; 466 K)

|-

|

Autoignition
temperature

| 365 °C (689 °F; 638 K)

|- }} {{Infobox drug | container_only = yes | drug_name = | INN = Nicotinic acid | type = | image = | width = | alt = | caption = | USAN = | INN_EMA = Nicotinic acid