HPLC-grade acetonitrile, 1,2-ethanediol (99.94%), and glycerol (99.88%) were obtained from Fisher Scientific, Waltham, MA, USA. The standards 5-O-caffeoylquinic acid, p-coumaric acid, and quercetin 3-O-glucoside and the solvent 1,3-butanediol (99.5%) were purchased from Sigma-Aldrich. 1,5-pentanediol (98%) was obtained from ACROS Organics, Morris Plains, NJ, USA. 1,3-propanediol (≥ 99.8%) was supplied by DuPont & Lyle BioProducts, Loudon, TN, USA. 1,2-pentanediol (>98%) was purchased from TCI, Tokyo, Japan, while 1,2-hexanediol (97%) was from Alfa AESAR, Kandel, Germany. 1,2-propanediol (99.5%) was purchased from Panreac, Barcelona, Spain. All the other chemicals were of analytical grade and purchased from common sources.
1 2 propanediol
Manufactured by ITW Reagents
Sourced in Germany
1,2-propanediol is a clear, colorless, and odorless organic compound. It is a glycol with the chemical formula C3H8O2. 1,2-propanediol serves as a common solvent and humectant in various industrial and laboratory applications.
Automatically generated - may contain errors
Lab products found in correlation
Tartaric acid, by ITW Reagents (2 mentions)
Glycerol, by ITW Reagents (2 mentions)
Milli q system, by Merck Group (2 mentions)
Ethanol, by Merck Group (2 mentions)
Methanol, by Merck Group (2 mentions)
Glycerol, by Thermo Fisher Scientific (1 mentions)
1 3 butanediol, by Merck Group (1 mentions)
1 5 pentanediol, by Thermo Fisher Scientific (1 mentions)
1 2 ethanediol, by Thermo Fisher Scientific (1 mentions)
5 o caffeoylquinic acid, by Merck Group (1 mentions)
Quercetin 3 o glucoside, by Merck Group (1 mentions)
Hplc grade acetonitrile, by Thermo Fisher Scientific (1 mentions)
P coumaric acid, by Merck Group (1 mentions)
Ortho phosphoric acid, by ITW Reagents (1 mentions)
Dichloromethane, by Merck Group (1 mentions)
Sodium hydroxide (naoh), by ITW Reagents (1 mentions)
Sodium metabisulfite, by ITW Reagents (1 mentions)
Sodium hydroxide (naoh), by Scharlab (1 mentions)
Acetonitrile, by Scharlab (1 mentions)
Propionic acid, by Merck Group (1 mentions)
4 protocols using 1 2 propanediol
1
HPLC Reagents and Standards Preparation
2
Determination of wine compounds
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Sodium metabisulfite 99% (Na2S2O5), tartaric acid (99%), glycerol (99.5%), 1,2-propanediol (99.5%), sodium hydroxide (98%), ortho phosphoric acid (85%), hydrogen peroxide 3% stabilized w/v VINIKIT, indicator 4,4, mixed (methyl red-methylene blue) VINIKIT, sodium hydroxide 0.01 mol/L VINIKIT were from Panreac (Barcelona, Spain). Dichloromethane, ethanol and methanol for gas chromatography analyses were purchased from Merk (Darmstadt, Germany). Glyoxal 40% in water were supplied by Sigma–Aldrich (Madrid, Spain). Water was purified in a Milli-Q system from Millipore (Bedford, Germany). Chemical standards were supplied by Sigma-Aldrich, Fluka (Madrid, Spain), ChemService (West Chester, PA, USA) and Firmenich (Switzerland). Their purity is over 90% in all cases, and most of them are over 99%. Specific details can be obtained from method references [10 (link),22 (link),24 (link)].
3
Analytical Characterization of Organic Compounds
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Ethanol, dichloromethane and mEthanol were supplied by Merck (Darmstadt, Germany), tartaric acid 99%, glycerol 99.5%, 1,2-propanediol 99.5% and sodium metabisulfite 97% were from Panreac (Barcelona, Spain), acetonitrile and sodium hydroxide 99% were from Scharlau (Barcelona, Spain). Water was purified in a Milli-Q system from Millipore (Bedford, Germany). Chemicals used for the analytical characterization were analytical grade and were supplied by Aldrich (Madrid, Spain), Fluka (Madrid, Spain), Chem Service (West Chester, PA, USA) and Firmenich (Switzerland). Purity of chemical standards is over 95% in all cases and most of them are over 99%. Specific details can be obtained from method references 19, 24 -35 .
4
Ecotoxicological Evaluation of Deep Eutectic Solvents
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The following chemical compounds were used for DES preparation:
[Chol]Cl (98% purity) was purchased from Acros Organic ® , Geel, Belgium; ethylene glycol (99.5% purity) was purchased from Sigma Aldrich ® , St. Louis, Missouri, EUA; 1,2-propanediol from Panreac ® , Barcelona, Spain; propionic acid (99% purity) from Merck ® , Darmstadt, Germany; glycerol (99,8% purity) was purchased from Fischer Chemical ® , Hampton, New Hampshire, EUA; urea (99% purity) from Panreac ® , Barcelona, Spain; and 1-propanol (99.5% purity) was acquired from Merck ® , Darmstadt, Germany.
Each DES was prepared in the following molar ratios: 1:2, 1:1, 2:1 and 4:1 (HBD:HBA). Briefly, HBD and HBA were added gravimetrically to closed vials and heated with constant agitation. After the formation of a transparent liquid, the mixture was cooled down to room temperature to obtain each DES. Since the purpose of this study was the evaluation of the ecotoxicological character of DES, some of the stock eutectic mixtures were prepared by adding a known volume of water. The water content of the starting materials and of DES was determined by Karl Fischer titration and considered in the calculation of the toxicity (Table S1).
[Chol]Cl (98% purity) was purchased from Acros Organic ® , Geel, Belgium; ethylene glycol (99.5% purity) was purchased from Sigma Aldrich ® , St. Louis, Missouri, EUA; 1,2-propanediol from Panreac ® , Barcelona, Spain; propionic acid (99% purity) from Merck ® , Darmstadt, Germany; glycerol (99,8% purity) was purchased from Fischer Chemical ® , Hampton, New Hampshire, EUA; urea (99% purity) from Panreac ® , Barcelona, Spain; and 1-propanol (99.5% purity) was acquired from Merck ® , Darmstadt, Germany.
Each DES was prepared in the following molar ratios: 1:2, 1:1, 2:1 and 4:1 (HBD:HBA). Briefly, HBD and HBA were added gravimetrically to closed vials and heated with constant agitation. After the formation of a transparent liquid, the mixture was cooled down to room temperature to obtain each DES. Since the purpose of this study was the evaluation of the ecotoxicological character of DES, some of the stock eutectic mixtures were prepared by adding a known volume of water. The water content of the starting materials and of DES was determined by Karl Fischer titration and considered in the calculation of the toxicity (Table S1).
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