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产品名称 Product Name |
乳酸 / Lactic Acid (Industrial Grade, 80% aqueous solution)(2-羟基丙酸、α-羟基丙酸、丙醇酸 / 2-Hydroxypropanoic acid, α-Hydroxypropionic acid) |
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别名 Synonyms |
2-羟基丙酸、α-羟基丙酸、丙醇酸 / 2-Hydroxypropanoic acid, α-Hydroxypropionic acid |
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化学式 Formula |
C₃H₆O₃ |
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分子量 Molecular Weight |
90.08 g/mol |
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CAS 登记号 CAS No. |
50-21-5 |
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EC / EINECS 号 |
200-018-0 |
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食品添加剂号 E-Number |
E 270 |
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海关编码 HS Code |
2918.11 |
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PubChem CID |
612 |
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InChIKey |
JVTAAEKCZFNVCJ-UHFFFAOYSA-N |
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主要用途 Primary Use |
食品酸度调节/防腐(E270)、乳酸酯/聚乳酸(PLA)原料、清洗剂、电镀、医药 / Food acidulant (E270), PLA precursor, cleaning, electroplating |
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主要成分 Main Component |
乳酸 C₃H₆O₃ ≥ 80.0%(工业级水溶液)/ Lactic acid C₃H₆O₃ ≥ 80.0% (industrial aqueous solution) |
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杂质 Impurities |
氯化物、硫酸盐、铁、重金属、灼烧残渣、还原糖、色度 / Chlorides, Sulfates, Iron, Heavy metals, Residue on ignition, Reducing sugars, Color |
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外观 Appearance |
无色至淡黄色透明粘稠液体(80% 工业级水溶液),无臭 / Colorless to pale-yellow viscous liquid (80% industrial solution), odorless |
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分子量 MW |
90.08 g/mol |
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熔点 MP |
约 18 °C(纯品);80% 溶液常温下为液体 / ~18 °C (pure); 80% solution liquid at room temp |
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沸点/分解 BP / Decomp. |
122 °C(15 mmHg);常压下受热分解/聚合 / 122 °C @15 mmHg; decomposes/polymerizes at atm. |
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密度 Density |
1.206 – 1.210 g/cm³(25 °C,80-88% 溶液) |
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水中溶解度 Solubility (H₂O) |
与水、乙醇完全混溶 / Miscible with water and ethanol |
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其他溶剂溶解度 in other |
与水混溶;微溶于乙醚 / Miscible with water; slightly in ether |
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pH |
近酸性,饱和溶液 pH ≈ 2.0 – 2.5 / Weakly acidic; saturated solution pH ≈ 2.0–2.5 |
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pKa |
3.86(25 °C,水)/ 3.86 (25 °C, water) |
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晶体结构 Crystal Structure |
—(液态) / Liquid |
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折射率 Refractive Index |
nD ≈ 1.439(20 °C) |
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吸湿/潮解 Hygroscopicity |
有吸湿性 / Hygroscopic |
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项目 Item |
典型值 Typical |
测试方法 Method |
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总酸含量 Total acid |
≥ 80.0% |
滴定 / Titration |
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氯化物(以 Cl 计)Chlorides |
≤ 0.01% |
滴定 / Titration |
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硫酸盐(以 SO₄ 计)Sulfates |
≤ 0.05% |
浊度法 / Turbidimetry |
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铁(以 Fe 计)Iron |
≤ 20 mg/kg |
AAS / ICP |
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重金属(以 Pb 计)Heavy metals |
≤ 10 mg/kg |
AAS / ICP |
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灼烧残渣 Sulfated ash |
≤ 3.0% |
重量法 / Gravimetric |
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色度 Color (APHA) |
≤ 50(食品级 food grade);工业级可协商(industrial grade negotiable) |
比色 / Colorimetry |
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密度 Density |
1.206 – 1.210 g/cm³ |
密度计 / Densitometer |
注:上述为工业级 80% 乳酸水溶液典型指标,可参照 GB 1886.173-2016(食品添加剂 乳酸)、GB 2023-2003 及 unitechemi / sinowin 供应商公开规格。L-乳酸 CAS 79-33-4、D-乳酸 CAS 10326-41-7;CAS 50-21-5 为未指定立体构型(常见工业级多为 DL/L 混合物或 L-富集)。具体数值以重庆广益化工出厂检验单(COA)为准。 / Industrial 80% aq. per GB 1886.173-2016, GB 2023-2003 and supplier TDS. L-lactic CAS 79-33-4, D-lactic CAS 10326-41-7; CAS 50-21-5 unspecified stereochemistry. Values per batch COA.
Food: E270 acidulant, preservative, flavor enhancer (beverages, sauces, meat)
Chemicals: esters e.g. ethyl lactate, polylactic acid (PLA) monomer
Cleaning: descaling, metal surface treatment
Electroplating: complexing agent for Ni/Zn plating, pH buffer
Pharma: infusion, pH adjustment, skin care (AHA)
Feed: acidifier, growth promoter
Food acidulant (E270), PLA feedstock, cleaning, electroplating, pharma
Store sealed in cool, dry, ventilated place; avoid sunlight and high temperature
Segregate from strong bases and oxidizers
Wear acid-resistant gloves, goggles, respirator/mask when handling
Manage as corrosive/general chemical; contain spills with sand/inert material
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GHS 分类 GHS Classification |
GHS05(腐蚀)/ GHS07;皮肤/眼损伤 / GHS05/GHS07; skin/eye damage |
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危害声明 H-statements |
H314 造成严重皮肤灼伤和眼损伤(高浓度);H318 造成严重眼损伤 / H314/H318 (conc.); H315/H319 (dilute) |
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防范说明 P-statements |
P260, P280, P303+P361+P353, P305+P351+P338, P310 |
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NFPA 704 |
健康 Health 2 / 易燃 Flammability 1 / 反应 Reactivity 0 |
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急性毒性 Acute Toxicity |
低毒:LD₅₀(大鼠,经口) ≈ 3543 mg/kg;高浓度具腐蚀性 / Low toxicity; corrosive when concentrated |
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危险反应 Hazardous Reaction |
与强碱中和放热;与强氧化剂反应;高温分解 / Exothermic neutralization with bases; reacts with oxidizers |
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灭火 Fire-fighting |
可燃液体;用雾状水、干粉、CO₂灭火;注意防飞溅 / Combustible liquid; water spray, powder, CO₂ |
25 kg / 200 kg / 250 kg 塑料桶;IBC 吨桶、槽车可定制。 25/200/250 kg plastic drums; IBC/tank truck on request.
在原包装、密封阴凉条件下 24 个月。 24 months in original sealed, cool storage.
Industrial use as corrosive/general chemical; EU exports subject to REACH (EC 200-018-0)
Food grade must comply with GB 1886.173-2016 / FCC / E 270 and hold HALAL/KOSHER
Concentrated solution transport may be Class 8 corrosive (UN3265); per latest SDS / IATA / IMDG
免责声明 / Disclaimer:本技术数据表仅供参考,不构成任何担保。数据基于编制时可得的公开信息,重庆广益化工有限公司不对因使用本表所产生的任何后果承担责任。实际技术参数请以每批次出厂 COA 为准。 This TDS is for reference only and does not constitute a warranty. Values per batch COA prevail.
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