Carbomer 940

• CAS: 76050-42-5
• Catalog Number: ACM76050425
• Category: Other Products
• Molecular Weight: 72.06g/mol
• Molecular Formula: C3H4O2;CH2=CHCOOH;C3H4O2
• Description: Acrylic acid is a colorless liquid with a distinctive acrid odor. Flash point 130°F. Boiling point 286°F. Freezing point 53°F. Corrosive to metals and tissue. Prolonged exposure to fire or heat can cause polymerization. If polymerization takes place in a closed container, violent rupture may occur. The inhibitor (usually hydroquinone) greatly reduces the tendency to polymerize.;Acrylic acid, [waste] appears as a colorless liquid with a distinctive acrid odor. Combustible. Flash point 130°F. Boiling point 286°F. Freezing point 121°F. Corrosive to metals and tissue. May polymerize under prolonged exposure to fire or heat. If polymerization occurs in a container violent rupture may occur. Generally shipped with an inhibitor such as hydroquinone to prevent polymerization.;Liquid;Liquid;COLOURLESS LIQUID WITH PUNGENT ODOUR.;Colorless liquid or solid (below 55°F) with a distinctive, acrid odor.;Colorless liquid or solid (below 55°F) with a distinctive, acrid odor. [Note: Shipped with an inhibitor (e.g., hydroquinone) since it readily polymerizes.]
• Synonyms: Acritamer 940;Lanopol 940;Acrypol 940;Phytogel base
• IUPAC Name: prop-2-enoic acid
• Canonical SMILES: C=CC(=O)O
• InChI: InChI=1S/C3H4O2/c1-2-3(4)5/h2H,1H2,(H,4,5)
• InChI Key: NIXOWILDQLNWCW-UHFFFAOYSA-N
• Boiling Point: 286 °F at 760 mm Hg (NTP, 1992);286 °F at 760 mm Hg (NIOSH, 2016);141.2 °C;142 °C;141 °C;286°F;286°F
• Melting Point: 55 °F (NTP, 1992);55 °F (NIOSH, 2016);13.5 °C;13.56 °C;13°C;14 °C;55°F;55°F
• Flash Point: 130 °F (NTP, 1992);121 °F (NIOSH, 2016);54 °C (open cup);122 °F (50 °C) (open cup);48-55 °C c.c.;121°F;121°F
• Density: 1.0497 at 68 °F (USCG, 1999);1.05 (NIOSH, 2016);1.0511 g/cu cm at 20 °C;1.54 g/mL at 25 °C/4 °C;Relative density (water = 1): 1.05;1.05;1.05
• Solubility: greater than or equal to 100 mg/mL at 63° F (NTP, 1992);Miscible (NIOSH, 2016);13.88 M;Miscible with alcohol, and ether;Miscible with ethanol, ethyl ether; soluble in acetone, benzene, carbon tetrachloride;Miscible with chloroform;Miscible with water /1X10+6 mg/L/ at 25 °C;Soluble in methanol, ethanol, dioxane, dimethylformamide, 2-propanol, formamide, ethylene glycol, and acetic acid;Soluble in water;1000 mg/mL;Solubility in water: miscible;Miscible
• Autoignition Temperature: 820 °F (USCG, 1999);438 °C; 820 °F;395 °C
• Color/Form: Acrid liquid;Liquid;Colorless liquid;Colorless liquid or solid (below 55 degrees F)
• Complexity: 55.9
• Corrosivity: Corrosive to metals
• Covalently-Bonded Unit Count: 1
• Decomposition: Acrylic acid rapidly decomposes in the atmosphere by photochemical attack on the double bond.;Complete decomposition occurs with heating for 30 min at 260 °C.;When heated to decomposition it emits acrid smoke and fumes.
• EC Number: 201-177-9;618-347-7;611-106-7;616-286-0
• Exact Mass: 72.021129g/mol
• Formal Charge: 0
• H-Bond Acceptor: 2
• H-Bond Donor: 1
• Heat of Vaporization: 10,955.1 gcal/gmole
• Heavy Atom Count: 5
• ICSC Number: 0688
• LogP: 0.35 (LogP);log Kow = 0.35;0.35;0.36 (estimated)
• Monoisotopic Mass: 72.021129g/mol
• NSC Number: 165257;114472;112123;112122;106037;106036;106035;106034;226569;4765
• Odor: Acrid odor and fumes;Quality: rancid, sweet; hedonic tone: unpleasant;Distinctive, acrid odor
• Other Experimental: Polymerizes readily in the presence of oxygen;Corrosive liquid;BP: 122.0 °C at 400 mm Hg; 103.3 °C at 200 mm Hg; 86.1 °C at 100 mm Hg; 66.2 °C at 40 mm Hg; 39.0 °C at 10 mm Hg; 27.3 °C at 5 mm Hg;1 ppm in air = 3 mg/cu m;Heat of Fusion: 9.51 kJ/mol at 12.5 °C;Activated carbon adsorbability: 0.129 g/g carbon;Saturated concentration in air: 12.6 g/cu m at 20 °C, 22.8 g/cu m at 30 °C;Ratio of specific heats of vapor: 1.121; Heat of polymerization: -463 BTU/lb= -257 cal/g= -10.8X10+5 J/kg; Reid vapor pressure: 0.2 psia;Liquid heat capacity: 0.460 BTU/lb-F at 106 °F; Saturated vapor density: 0.00106 lb/cu ft at 70 °F; Ideal gas heat capacity: 0.257 BTU/lb-F at 75 °F;Bulk density: 8.6 lb/gal at 20 °C;Henry's Law constant = 3.7X10-7 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 1.75X10-11 cu cm/molec-sec at 25 °C;Ozone reaction rate constant = 6.5X10-19 cu cm/molec-sec at 25 °C;Glass transition temperature: 106-126 °C; decomposes above 250 °C, liberating carbon dioxide;Hygroscopic; forms clumps when added to water
• Refractive Index: Index of refraction: 1.4224 at 20 °C/D;Index of refraction: 1.4185 at 25 °C;Index of refraction = 1.544 at 25 °C
• Rotatable Bond Count: 1
• RTECS Number: AS4375000;AT4680000
• Stability: Stable under recommended storage conditions. Contains the following stabilizer(s): Mequinol (>/=0.018 -
• UNII J94PBK7X8S:
  UN Number
  2218;2218;2218;2218;2218;2218
• Vapor Density 2.5 (NTP, 1992) (Relative to Air);2.5 (Air = 1);Relative vapor density (air = 1): 2.5:
  Vapor Pressure
  3.2 mm Hg at 68 °F ; 5 mm Hg at 81.1° F (NTP, 1992);3 mm Hg (NIOSH, 2016);3.97 mmHg;3.97 mm Hg at 25 °C;Vapor pressure, Pa at 20 °C: 413;3 mmHg;3 mmHg

Case Study

Preparation of Carbomer 940-Based Hydrogel for Wound Healing

Huang, Yingbei, et al. International journal of biological macromolecules, 2019, 132, 729-737.

Carbomer 940 (CBM940) has been widely used in the pharmaceutical and cosmetic industries due to its gel stability, bioadhesion, rheology and high patient acceptance. A hydrogel with wound healing ability (Bsp/CMC/CBM 940) can be simply prepared by physically mixing carbomer 940 (CBM940) with Bletilla striata polysaccharide (Bsp) and carboxymethyl chitosan (CMC).
Preparation procedure of carbomer 940-based hydrogel
· 0.5% (w/w) CBM940 was prepared by dissolving 0.5 g CBM940 in deionized distilled water, and the resultant solution was kept overnight at ambient temperature.
· CMC and Bsp solutions, each in a concentration of 10% (w/v), were then prepared. CMC and CBM940 solutions were afterwards mixed in three different concentrations (1:1, 1:2 and 2:1, respectively), and stirred for 5 minutes.
· After adjusting the pH to 7 with triethanolamine, Bsp solution (10%) was added. The entire solution was eventually adjusted to a concentration of 100 g by the addition of deionized distilled water, and was stirred regularly at 25°C for 20 min until a homogenous, transparent and well-gelled hydrogels were formed.