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4-Aminobenzoic acid

4-Aminobenzoic acid Structure
4-Aminobenzoic acid
  • CAS No.150-13-0
  • Chemical Name:4-Aminobenzoic acid
  • Synonyms:PABA;potaba;rvpaba;Pabacyd;Pabagel;Pabanol;p-amino;Romavit;Actipol;Pabafilm
  • CBNumber:CB4212038
  • Molecular Formula:C7H7NO2
  • Formula Weight:137.14
  • MOL File:150-13-0.mol
4-Aminobenzoic acid Property
  • Melting point: :187-189 °C(lit.)
  • Boiling point: :251.96°C (rough estimate)
  • Density  :1.374 g/mL at 25 °C(lit.)
  • refractive index  :1.5323 (estimate)
  • Flash point: :250 °C
  • storage temp.  :2-8°C
  • solubility  :95% ethanol: soluble5%, clear to slightly hazy, colorless to yellow
  • form  :Crystalline Powder
  • pka :2.50, 4.87(at 25℃)
  • color  :White to light yellow
  • PH :3.5 (5g/l, H2O, 20℃)
  • Water Solubility  :4.7 g/L (20 ºC)
  • Sensitive  :Air & Light Sensitive
  • Merck  :14,423
  • BRN  :471605
  • Stability: :Stable. Incompatible with strong oxidizing agents. Combustible. Sensitive to light and air. May discolour on exposure to light.
  • InChIKey :ALYNCZNDIQEVRV-UHFFFAOYSA-N
  • CAS DataBase Reference :150-13-0(CAS DataBase Reference)
  • NIST Chemistry Reference :p-Aminobenzoic acid(150-13-0)
  • EPA Substance Registry System :Benzoic acid, 4-amino-(150-13-0)
Safety
  • Hazard Codes  :Xn,Xi
  • Risk Statements  :22-36/37/38-43
  • Safety Statements  :26-36-37/39
  • WGK Germany  :3
  • RTECS  :DG1400000
  • TSCA  :Yes
  • HS Code  :29224995
  • Hazardous Substances Data :150-13-0(Hazardous Substances Data)
  • Toxicity :LD50 in mice, rats (g/kg): 2.85, >6.0 orally (Scott, Robbins); LD50 in rabbits (g/kg): 2.0 i.v. (Richards); 1.83 orally (Cronheim)
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordWarning
  • Hazard statements
  • H302:Harmful if swallowed
  • H315:Causes skin irritation
  • H317:May cause an allergic skin reaction
  • H319:Causes serious eye irritation
  • H335:May cause respiratory irritation
  • H413:May cause long lasting harmful effects to aquatic life
  • Precautionary statements
  • P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
  • P264:Wash hands thoroughly after handling.
  • P264:Wash skin thouroughly after handling.
  • P270:Do not eat, drink or smoke when using this product.
  • P272:Contaminated work clothing should not be allowed out of the workplace.
  • P280:Wear protective gloves/protective clothing/eye protection/face protection.
  • P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
  • P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
  • P405:Store locked up.
  • P501:Dispose of contents/container to..…
4-Aminobenzoic acid Price More Price(25)
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  • Product name : 4-Aminobenzoic acid
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  • Product name : 4-Aminobenzoic acid
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  • Brand: TCI Chemical
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  • Product name : 4-Aminobenzoic Acid
  • Purity: >99.0%(HPLC)(T)
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  • Product name : 4-Aminobenzoic acid, 99%
  • Purity: 
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4-Aminobenzoic acid Chemical Properties,Usage,Production

  • Description 4-Aminobenzoic acid (also known as para-aminobenzoic acid or PABA because the number 4 carbon in the benzene ring is also known as the para position) is an organic compound with the formula H2NC6H4CO2H. PABA is a white solid, although commercial samples can appear gray. It is slightly soluble in water. It consists of a benzene ring substituted with amino and a carboxyl groups. The compound occurs naturally. The potassium salt is used as a drug against fibrotic skin disorders, such as Peyronie's disease, under the trade name Potaba. PABA is also occasionally used in pill form by sufferers of irritable bowel syndrome to treat its associated gastrointestinal symptoms, and in nutritional epidemiological studies to assess the completeness of 24-hour urine collection for the determination of urinary sodium, potassium, or nitrogen levels.
  • Chemical Properties White to off white crystalline powder
  • Uses Widely distributed in nature as a B complex factor. Baker’s yeast contains 5 to 6 ppm, brewer’s yeast from 10 to 100 ppm. Occurs free and in ester form.
  • Uses gastric acid secretion inhibitor
  • Uses octyl dimethyl PABA (padimate-O; p-aminobenzoic acid) is an FDA-approved sunscreen chemical whose InCI name is now ethylhexyl dimethyl PABA.
  • Uses PABA is a sunscreen chemical with an approved usage level of 5 to 15 percent. It is found to be irritating to sensitive skin, has the potential to cause sensitization, and is considered too water soluble. once extremely popular, this ingredient has practically disappeared from sunscreen formulations. PABA is a yellowish or colorless acid found in vitamin B complex.
  • Definition ChEBI: An aminobenzoic acid in which the amino group is para to the carboxy group.
  • brand name RVPaba Lipstick (ICN).
  • General Description Colorless crystals that discolor on exposure to light and air.
  • Reactivity Profile 4-Aminobenzoic acid is incompatible with ferric salts and oxidizing agents.
  • Hazard Questionable carcinogen.
  • Safety Profile Moderately toxic by ingestion and intravenous routes. Ingesting large doses can cause nausea, vomiting, skin rash, methemoglobinemia, and possibly toxic hepatitis. Experimental reproductive effects. Mutation data reported. Questionable carcinogen. Combustible. When heated to decomposition it emits toxic fumes of NO,. A topical sunscreen.
  • Purification Methods Purify p-aminobenzoic acid by dissolving it in 4-5% aqueous HCl at 50-60o, decolorising with charcoal and carefully precipitating it with 30% Na2CO3 to pH 3.5-4 in the presence of ascorbic acid. It can be recrystallised from water, EtOH or EtOH/water mixtures. [Beilstein 14 IV 1126.]
4-Aminobenzoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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