Lactic acid（CAS 50-21-5）：分子式 C3H6O3、分子量 90.08。
| CAS号 | 50-21-5 |
|---|---|
| 分子式 | C3H6O3 |
| 分子量 | 90.08 |
| 熔点 | 16.8 |
| 沸点 | 122 |
| LogP | -0.7 |
| 应用领域 | Uses: CIR ingredient: Lactic Acid、Used as a solvent and acidulant in the production of foods、drugs、and dyes、Also used as a mordant in woolen goods printing、a soldering flux、a dehairing agent、and a catalyst for phenolic resins、Also used in leather tanning、oil well acidizing、and as a plant growth regulator、[HSDB]、Petroleum Production and Refining [Category: Industry]、Soldering [Category: Heat or Machine]、Farming (Pesticides) [Category: Industry]、Leather Tanning and Processing [Category: Industry]、Fur Dressing and Dyeing [Category: Industry]、Textiles (Printing、Dyeing、or Finishing) [Category: Industry]、The fastest growing use for lactic acid is its use as a monomer for the production of polylactic acid or polylactide (PLA). ... Applications for PLA include containers for the food and beverage industries、films and rigid containers for packaging、and serviceware (cups、plates、utensils). The PLA polymer can also be spun into fibers and used in apparel、fiberfill (pillows、comforters)、carpet、and nonwoven applications such as wipes.、It is used in metal plating、cosmetics、and the textile and leather industry.、In dyeing baths、as mordant in printing woolen goods、solvent for water-insoluble dyes (alcohol-soluble induline、nigrosine、spirit-blue). Reducing chromates in mordanting wool. Manufacturing cheese、confectionery. Component of babies' milk formulas、acidulant in beverages、for acidulating worts in brewing. In preparation of sodium lactate injections. Ingredient of cosmetics. Component of spermatocidal jellies. For removing Clostridium butyricum in manufacturing of yeast、dehairing、plumping、and decalcifying hides. Solvent for cellulose formate. Flux for soft solder. Manufacturing lactates which are used in food products、in medicine、and as solvents. Plasticizer、catalyst in the casting of phenolaldehyde resins.、Plant growth regulator、For more Uses (Complete) data for LACTIC ACID (7 total)、please visit the HSDB record page.、Use Classification: EPA Safer Chemical Functional Use Classes -> Preservatives and Antioxidants、Processing Aids and Additives、Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern、Fragrance Ingredients、Flavouring Agent -> FLAVOURING_AGENTFood Additives -> ACID、ACIDITY_REGULATOR -> JECFA Functional Classes、Flavoring Agents -> JECFA Flavorings Index、Cosmetics -> Skin conditioning、Buffering、Humectant、Industry Uses: Plating agent、Chemical reaction regulator、pH regulating agent、Processing aids not otherwise specified、Tanning agents not otherwise specified、Not Known or Reasonably Ascertainable、Chelating agent、Etching agent、Intermediate、Consumer Uses: Intermediate、Flavoring and nutrient、Household Products: Information on 288 consumer products that contain Lactic acid in the following categories is provided:、• Commercial、Institutional、• Home Maintenance、• Inside the Home、• Personal Care、Methods of Manufacturing: Lactic acid is produced on an industrial scale by fermentation or a synthetic method. ... The fermentation process requires carbohydrates、nutrients、and a microorganism to produce lactic acid via fermentation. The carbohydrates used in fermentation consist predominantly of hexoses or compounds which can be easily split into hexoses、e.g.、glucose、corn syrups、molasses、sugar beet juice、whey、as well as rice、wheat、corn、and potato starches. ... The nutrients required by the microorganisms include soluble peptides and amino acids、phosphates and ammonium salts、and vitamins. In many cases、the peptides and amino acids are a complex nitrogen source such as yeast extract paste、corn steep liquor、corn gluten meal、malt sprouts、soy peptone、and meat peptone. Only a minimal amount of these complex nitrogen sources are used in order to simplify purification of the lactic acid. During fermentation、the pH of the broth must be controlled between 5.0 and 6.5. Lime (calcium hydroxide)、calcium carbonate、ammonium hydroxide、and sodium hydroxide are typically used to neutralize the lactic acid made in the broth to maintain constant pH. Thus、calcium lactate、ammonium lactate、or sodium lactate salts are formed in the fermentation broth. ... Lactic acid yields are between 85 and 95% based on fermentable sugars. Typical fermentation byproducts、such as formic acid and acetic acid、are found in concentrations of less than 0.5 wt%. "Homofermentive" bacterial strains are typically used as they produce the least amount of byproducts. ... After fermentation、the lactic acid broth needs to be purified for its intended use.、It is produced commercially either by fermentation of carbohydrates such as glucose、sucrose、or lactose、or by a procedure involving formation of lactonitrile from acetaldehyde and hydrogen cyanide and subsequent hydrolysis to lactic acid.、Chemical preparations from acetaldehyde and CO、carbon monoxide、in dilute H2SO4、sulfuric acid、at 130-200 °C and 900 atm: Loder、United States of America patent 2265945 (1938 to du Pont)、by hydrolysis of hexoses with NaOH、sodium hydroxide、: Lock、United States of America patent 2382889 (1943).、Chemical Synthesis: The commercial process is based on lactonitrile、which used to be a by-product of acrylonitrile synthesis. It involves base-catalyzed addition of hydrogen cyanide to acetaldehyde to produce lactonitrile. This is a liquid-phase reaction and occurs at atmospheric pressures. The crude lactonitrile is then recovered and purified by distillation and is hydrolyzed to lactic acid using either concentrated hydrochloric or sulfuric acid、producing the corresponding ammonium salt as a by-product. This crude lactic acid is esterified with methanol、producing methyl lactate. The latter is recovered and purified by distillation and hydrolyzed by water under acid catalysts to produce lactic acid、which is further concentrated、purifie |
登记用途：Uses: CIR ingredient: Lactic Acid、Used as a solvent and acidulant in the production of foods、drugs、and dyes、Also used as a mordant in woolen goods printing、a soldering flux、a dehairing agent、and a catalyst for phenolic resins、Also used in leather tanning、oil well acidizing、and as a plant growth regulator、[HSDB]、Petroleum Production and Refining [Category: Industry]、Soldering [Category: Heat or Machine]、Farming (Pesticides) [Category: Industry]、Leather Tanning and Processing [Category: Industry]、Fur Dressing and Dyeing [Category: Industry]、Textiles (Printing、Dyeing、or Finishing) [Category: Industry]、The fastest growing use for lactic acid is its use as a monomer for the production of polylactic acid or polylactide (PLA). ... Applications for PLA include containers for the food and beverage industries、films and rigid containers for packaging、and serviceware (cups、plates、utensils). The PLA polymer can also be spun into fibers and used in apparel、fiberfill (pillows、comforters)、carpet、and nonwoven applications such as wipes.、It is used in metal plating、cosmetics、and the textile and leather industry.、In dyeing baths、as mordant in printing woolen goods、solvent for water-insoluble dyes (alcohol-soluble induline、nigrosine、spirit-blue). Reducing chromates in mordanting wool. Manufacturing cheese、confectionery. Component of babies' milk formulas、acidulant in beverages、for acidulating worts in brewing. In preparation of sodium lactate injections. Ingredient of cosmetics. Component of spermatocidal jellies. For removing Clostridium butyricum in manufacturing of yeast、dehairing、plumping、and decalcifying hides. Solvent for cellulose formate. Flux for soft solder. Manufacturing lactates which are used in food products、in medicine、and as solvents. Plasticizer、catalyst in the casting of phenolaldehyde resins.、Plant growth regulator、For more Uses (Complete) data for LACTIC ACID (7 total)、please visit the HSDB record page.、Use Classification: EPA Safer Chemical Functional Use Classes -> Preservatives and Antioxidants、Processing Aids and Additives、Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern、Fragrance Ingredients、Flavouring Agent -> FLAVOURING_AGENTFood Additives -> ACID、ACIDITY_REGULATOR -> JECFA Functional Classes、Flavoring Agents -> JECFA Flavorings Index、Cosmetics -> Skin conditioning、Buffering、Humectant、Industry Uses: Plating agent、Chemical reaction regulator、pH regulating agent、Processing aids not otherwise specified、Tanning agents not otherwise specified、Not Known or Reasonably Ascertainable、Chelating agent、Etching agent、Intermediate、Consumer Uses: Intermediate、Flavoring and nutrient、Household Products: Information on 288 consumer products that contain Lactic acid in the following categories is provided:、• Commercial、Institutional、• Home Maintenance、• Inside the Home、• Personal Care、Methods of Manufacturing: Lactic acid is produced on an industrial scale by fermentation or a synthetic method. ... The fermentation process requires carbohydrates、nutrients、and a microorganism to produce lactic acid via fermentation. The carbohydrates used in fermentation consist predominantly of hexoses or compounds which can be easily split into hexoses、e.g.、glucose、corn syrups、molasses、sugar beet juice、whey、as well as rice、wheat、corn、and potato starches. ... The nutrients required by the microorganisms include soluble peptides and amino acids、phosphates and ammonium salts、and vitamins. In many cases、the peptides and amino acids are a complex nitrogen source such as yeast extract paste、corn steep liquor、corn gluten meal、malt sprouts、soy peptone、and meat peptone. Only a minimal amount of these complex nitrogen sources are used in order to simplify purification of the lactic acid. During fermentation、the pH of the broth must be controlled between 5.0 and 6.5. Lime (calcium hydroxide)、calcium carbonate、ammonium hydroxide、and sodium hydroxide are typically used to neutralize the lactic acid made in the broth to maintain constant pH. Thus、calcium lactate、ammonium lactate、or sodium lactate salts are formed in the fermentation broth. ... Lactic acid yields are between 85 and 95% based on fermentable sugars. Typical fermentation byproducts、such as formic acid and acetic acid、are found in concentrations of less than 0.5 wt%. "Homofermentive" bacterial strains are typically used as they produce the least amount of byproducts. ... After fermentation、the lactic acid broth needs to be purified for its intended use.、It is produced commercially either by fermentation of carbohydrates such as glucose、sucrose、or lactose、or by a procedure involving formation of lactonitrile from acetaldehyde and hydrogen cyanide and subsequent hydrolysis to lactic acid.、Chemical preparations from acetaldehyde and CO、carbon monoxide、in dilute H2SO4、sulfuric acid、at 130-200 °C and 900 atm: Loder、United States of America patent 2265945 (1938 to du Pont)、by hydrolysis of hexoses with NaOH、sodium hydroxide、: Lock、United States of America patent 2382889 (1943).、Chemical Synthesis: The commercial process is based on lactonitrile、which used to be a by-product of acrylonitrile synthesis. It involves base-catalyzed addition of hydrogen cyanide to acetaldehyde to produce lactonitrile. This is a liquid-phase reaction and occurs at atmospheric pressures. The crude lactonitrile is then recovered and purified by distillation and is hydrolyzed to lactic acid using either concentrated hydrochloric or sulfuric acid、producing the corresponding ammonium salt as a by-product. This crude lactic acid is esterified with methanol、producing methyl lactate. The latter is recovered and purified by distillation and hydrolyzed by water under acid catalysts to produce lactic acid、which is further concentrated、purifie。
Lactic acid 是一种化工化合物，登记 CAS 号为 50-21-5，分子式 C3H6O3（分子量 90.08）。
登记 CAS 号：50-21-5
其分子式 C3H6O3 由 3 个碳、6 个氢、3 个氧 组成。
别名/同义词：Lactic acid · DL-Lactic acid · 2-HYDROXYPROPIONIC ACID
Lactic acid 的 CAS 登记号为 50-21-5。
分子式 C3H6O3，分子量 90.08。
别名/同义词：Lactic acid、DL-Lactic acid、2-HYDROXYPROPIONIC ACID。
登记用途：Uses: CIR ingredient: Lactic Acid、Used as a solvent and acidulant in the production of foods、drugs、and dyes、Also used as a mordant in woolen goods printing、a soldering flux、a dehairing agent、and a catalyst for phenolic resins、Also used in leather tanning、oil well acidizing、and as a plant growth regulator、[HSDB]、Petroleum Production and Refining [Category: Industry]、Soldering [Category: Heat or Machine]、Farming (Pesticides) [Category: Industry]、Leather Tanning and Processing [Category: Industry]、Fur Dressing and Dyeing [Category: Industry]、Textiles (Printing、Dyeing、or Finishing) [Category: Industry]、The fastest growing use for lactic acid is its use as a monomer for the production of polylactic acid or polylactide (PLA). ... Applications for PLA include containers for the food and beverage industries、films and rigid containers for packaging、and serviceware (cups、plates、utensils). The PLA polymer can also be spun into fibers and used in apparel、fiberfill (pillows、comforters)、carpet、and nonwoven applications such as wipes.、It is used in metal plating、cosmetics、and the textile and leather industry.、In dyeing baths、as mordant in printing woolen goods、solvent for water-insoluble dyes (alcohol-soluble induline、nigrosine、spirit-blue). Reducing chromates in mordanting wool. Manufacturing cheese、confectionery. Component of babies' milk formulas、acidulant in beverages、for acidulating worts in brewing. In preparation of sodium lactate injections. Ingredient of cosmetics. Component of spermatocidal jellies. For removing Clostridium butyricum in manufacturing of yeast、dehairing、plumping、and decalcifying hides. Solvent for cellulose formate. Flux for soft solder. Manufacturing lactates which are used in food products、in medicine、and as solvents. Plasticizer、catalyst in the casting of phenolaldehyde resins.、Plant growth regulator、For more Uses (Complete) data for LACTIC ACID (7 total)、please visit the HSDB record page.、Use Classification: EPA Safer Chemical Functional Use Classes -> Preservatives and Antioxidants、Processing Aids and Additives、Safer Chemical Classes -> Green circle - The chemical has been verified to be of low concern、Fragrance Ingredients、Flavouring Agent -> FLAVOURING_AGENTFood Additives -> ACID、ACIDITY_REGULATOR -> JECFA Functional Classes、Flavoring Agents -> JECFA Flavorings Index、Cosmetics -> Skin conditioning、Buffering、Humectant、Industry Uses: Plating agent、Chemical reaction regulator、pH regulating agent、Processing aids not otherwise specified、Tanning agents not otherwise specified、Not Known or Reasonably Ascertainable、Chelating agent、Etching agent、Intermediate、Consumer Uses: Intermediate、Flavoring and nutrient、Household Products: Information on 288 consumer products that contain Lactic acid in the following categories is provided:、• Commercial、Institutional、• Home Maintenance、• Inside the Home、• Personal Care、Methods of Manufacturing: Lactic acid is produced on an industrial scale by fermentation or a synthetic method. ... The fermentation process requires carbohydrates、nutrients、and a microorganism to produce lactic acid via fermentation. The carbohydrates used in fermentation consist predominantly of hexoses or compounds which can be easily split into hexoses、e.g.、glucose、corn syrups、molasses、sugar beet juice、whey、as well as rice、wheat、corn、and potato starches. ... The nutrients required by the microorganisms include soluble peptides and amino acids、phosphates and ammonium salts、and vitamins. In many cases、the peptides and amino acids are a complex nitrogen source such as yeast extract paste、corn steep liquor、corn gluten meal、malt sprouts、soy peptone、and meat peptone. Only a minimal amount of these complex nitrogen sources are used in order to simplify purification of the lactic acid. During fermentation、the pH of the broth must be controlled between 5.0 and 6.5. Lime (calcium hydroxide)、calcium carbonate、ammonium hydroxide、and sodium hydroxide are typically used to neutralize the lactic acid made in the broth to maintain constant pH. Thus、calcium lactate、ammonium lactate、or sodium lactate salts are formed in the fermentation broth. ... Lactic acid yields are between 85 and 95% based on fermentable sugars. Typical fermentation byproducts、such as formic acid and acetic acid、are found in concentrations of less than 0.5 wt%. "Homofermentive" bacterial strains are typically used as they produce the least amount of byproducts. ... After fermentation、the lactic acid broth needs to be purified for its intended use.、It is produced commercially either by fermentation of carbohydrates such as glucose、sucrose、or lactose、or by a procedure involving formation of lactonitrile from acetaldehyde and hydrogen cyanide and subsequent hydrolysis to lactic acid.、Chemical preparations from acetaldehyde and CO、carbon monoxide、in dilute H2SO4、sulfuric acid、at 130-200 °C and 900 atm: Loder、United States of America patent 2265945 (1938 to du Pont)、by hydrolysis of hexoses with NaOH、sodium hydroxide、: Lock、United States of America patent 2382889 (1943).、Chemical Synthesis: The commercial process is based on lactonitrile、which used to be a by-product of acrylonitrile synthesis. It involves base-catalyzed addition of hydrogen cyanide to acetaldehyde to produce lactonitrile. This is a liquid-phase reaction and occurs at atmospheric pressures. The crude lactonitrile is then recovered and purified by distillation and is hydrolyzed to lactic acid using either concentrated hydrochloric or sulfuric acid、producing the corresponding ammonium salt as a by-product. This crude lactic acid is esterified with methanol、producing methyl lactate. The latter is recovered and purified by distillation and hydrolyzed by water under acid catalysts to produce lactic acid、which is further concentrated、purifie。
Lactic acid（CAS 50-21-5）的独立参考数据，整理自公开化学数据库。
| CAS 号 | 50-21-5 |
|---|---|
| PubChem CID | 612 |
| 分子式 | C3H6O3 |
| 分子量 | 90.03 g/mol |
| IUPAC 名称 | 2-hydroxypropanoic acid |
| InChIKey | JVTAAEKCZFNVCJ-UHFFFAOYSA-N |
| UNII（FDA） | 3B8D35Y7S4 |
| ChEBI 编号 | CHEBI:78320 |
| ATC 编码（WHO） | G01AD01 |
| FEMA 编号 | 2611 |
| JECFA 编号 | 930 |
| Molecular Weight | 90.08 |
|---|---|
| XLogP3 | -0.7 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 1 |
| Exact Mass | 90.031694049 |
| Monoisotopic Mass | 90.031694049 |
| Topological Polar Surface Area | 57.5 |
| Heavy Atom Count | 6 |
| Color/Form | Crystals (melt at 16.8 °C) |
|---|---|
| Boiling Point | 122 |
| Boiling Point | 122 °C at 15 mm Hg |
| Boiling Point | 122 °C (15 mm Hg) |
| Melting Point | 16.8 |
| Melting Point | 16.8 °C |
| Melting Point | 17 °C |
| Flash Point | 113 °C (235 °F) - closed cup |
| Flash Point | 110 °C c.c. |
| Solubility | 1000000 |
lactic acid; 2-hydroxypropanoic acid; DL-Lactic acid; 50-21-5; 2-hydroxypropionic acid; Milk acid; Tonsillosan; Racemic lactic acid; Ordinary lactic acid; Acidum lacticum; Ethylidenelactic acid; Lactovagan; Milchsaeure; Lactic acid, dl-; Kyselina mlecna; Lacticum acidum
| 法规与食品接触 | EU Flavoring substances FDA Substance added to food: ANTIMICROBIAL AGENT, CURING OR PICKLING AGENT, FLAVOR ENHANCER, FLAVORING AGENT FDA 21 CFR 中列出的食品接触物质清单：FCS Flavoring Agents FLAVOURING_AGENTFood Additives -> ACID; ACIDITY_REGULATOR: Flavouring Agent ANTIMICROBIAL AGENT, CURING OR PICKLING AGENT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, PH CONTROL AGENT, |
|---|---|
| GHS 通报统计 | 0.2% (5 / 2808) |
| GHS 通报统计 | 0.2% (5 / 2808) |
|---|---|
| 已通报的危害声明 | H314 (11.8%), H315 (87.5%), H318 (91.9%) |
DL-乳酸 的 CAS 号为 50-21-5，分子式 C3H6O3，分子量 90.03 g/mol。 UNII 3B8D35Y7S4; ChEBI 78320; InChIKey JVTAAEKCZFNVCJ-UHFFFAOYSA-N. Color/Form: Crystals (melt at 16.8 °C); Boiling Point: 122; Boiling Point: 122 °C at 15 mm Hg.
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: Lactic acid