Acetic acid, sodium salt (2:1) 双乙酸钠

CAS 126-96-5 MFCD00137248

化学结构图

126-96-5
SMILES: CC(=O)O.[NaH]

化学属性

Mol. FormulaC4H7NaO4
Mol. Weight142.09
Melting Point323-329 °C
Flash Point-65 °F
Density1.5285
Stability对湿度敏感
Appearance solid
Solubility易溶于水和乙醇。
Boiling Point34 °C(lit.)
Refractive indexn20/D 1.422(lit.)

别名和识别编码

Chemical NameAcetic acid, sodium salt (2:1)
Synonym Sodium diacetate {LY} Sodium diacetate {} {LY} Sodium diacetate {} {} {LY} Sodium diacetate {} {} {} {LY} Sodium diacetate {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Sodium diacetate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}
MDL NumberMFCD00137248
PubChem Substance ID23662384
Beilstein Registry Number3786729
CAS Number126-96-5
EC Number204-814-9
Chemical Name Translation双乙酸钠
Merck Number13,8681
LabNetwork Molecule IDLN00010117
Canonical SMILES[Na].O=C(O)C
InChIInChI=1S/2C2H4O2.Na/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+1/p-1
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分类

  • {SNA} Biological Buffers, Buffer Convenience Packaging, Bu
  • {SNA} β-Glucuronidase Drug Ana
  • {SNA} By Referenc
  • {SNA} Alphabetical Listings, Flavors and Fragrances, Q-Z
  • {SNA} By Reference Material,
  • Analytical Reagents, Analytical/Chromatography, By Reference Material, Most common compounds for volumetric titration, Reference Material Perchloric acid, S - Z, Salt Solutions, Sodium salt solutions, Titration,
  • {SNA} Buffer Convenience Packaging, Buffer Solutions, Buffers A to Z, DNA和RNA纯化, Reagents, 分子生物学, 植物分子生物学, 植物核酸纯化, 植物生物技术, 生化试剂, 生物

产品应用

  • 双乙酸钠是一种多功能的食用化学品。主要用作食品和饲料工业的防腐剂、防霉剂、螯合剂、调味剂、PH调节剂、肉制品的保存剂,也是复合型防霉剂的主要配料。

相关文献及参考

  • Merck: 14,8607

安全信息

WGK Germany1
Personal Protective Equipment Eyeshields, Gloves, half-mask respirator (US), multi-purpose combination respirator cartridge (US) Eyeshields, Gloves Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
GHS Symbol
Precautionary statements
  • P262 Do not get in eyes, on skin, or on clothing. 不要接触眼睛,皮肤或衣服。
  • P264+P265
  • P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
  • P305+P351+P338
  • P305+P354+P338
  • P310 Immediately call a POISON CENTER or doctor/physician. 立即呼救解毒中心或医生/医师。
  • P317
Hazard statements
  • H226 Flammable liquid and vapour 易燃液体和蒸气
  • H314 Causes severe skin burns and eye damage 导致严重的皮肤灼伤和眼睛损伤
  • H318 Causes serious eye damage 严重伤害眼睛
Hazard Codes C Xi F+,T
Signal word Danger
Safety Statements
  • S23 Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer) 不要吸入气体/烟雾/蒸汽/喷雾;
  • S24/25 Avoid contact with skin and eyes 避免皮肤和眼睛接触;
  • S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后,立即用大量水冲洗并征求医生意见;
  • S36/39 Wear suitable protective clothing and eye/face protection 穿戴适当的防护服和眼睛/面保护;
  • S45 In case of accident or if you feel unwell seek medical advice immediately (show the label where possible) 发生事故时或感觉不适时,立即求医(可能时出示标签);
Packing GroupI
Storage condition Store at room temperature, keep dry and cool {LY} Store at room temperature, keep dry and cool {} {LY} Store at room temperature, keep dry and cool {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature, keep dry and cool {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store
UN Number UN 2790 8/PG 2 UN 1218 3/PG 1 UN 1993 3/PG 3
RTECSAJ4375000
Risk Statements
  • R35 Causes severe burns 会导致严重灼伤
  • R10 Flammable 易燃
  • R45 May cause cancer 可能致癌
  • R52/53
  • R68 Possible risk of irreversible effects 可能有不可挽回的作用的危险
  • R12 Extremely flammable 极端易燃
  • R36 Irritating to eyes 刺激眼睛
Hazard Class3

其他信息

  • 灭火剂:干粉、干砂、二氧化碳、泡沫
  • 食品添加剂最大允许使用量最大允许残留量标准:添加剂中文名称 允许使用该种添加剂的食品中文名称 添加剂功能 最大允许使用量(g/kg) 最大允许残留量(g/kg) 双乙酸钠 油炸小食品(仅限油炸薯片) 防腐剂 1.0 双乙酸钠 复合调味料 防腐剂 10.0 双乙酸钠 调味品 防腐剂 2.5 双乙酸钠 熟肉制品 防腐剂 3.0 双乙酸钠 预制肉制品 防腐剂 3.0 双乙酸钠 糕点 防腐剂 4.0 双乙酸钠 大米 防腐剂 0.2 残留量≤30mg/kg 双乙酸钠 原粮 防腐剂 1.0 双乙酸钠 豆干再制品 防腐剂 1.0 双乙酸钠
  • 上游原料:3-甲基-1-丁烯 --> 2-甲基丁烷(异戊烷) --> 碳五馏分
  • 外观形状:白色结晶粉末或结晶状固体,带醋酸气味,无毒,具有乙酸气味。双乙酸钠(126-96-5)除具有优良的防霉、防腐、保鲜功效,还可以增强食欲,促进饲料的转化吸收,提高饲料中的蛋白质的利用率。广泛用于防霉剂、防腐剂、调味剂,消毒剂和PH调节剂。
  • 毒性:ADI 0~15mg/kg(FAO/WHO,2001)。 LD 50 4.968g/kg(大鼠,经口) GRAS(FDA,§184.1754,2000)。
  • 方法三:(1)乙酸与碳酸钠反应。将碳酸钠5.3g(0.05mol)和水2mL加入反应瓶,搅拌升温至40℃,开始缓慢滴加冰醋酸12.0g(0.2mol)。滴完后在80℃下反应4h,冷却结晶、过滤。滤液再浓缩结晶,合并两次白色晶体物,烘干得产品13.6g,收率95.8%。 (2)乙酸-乙酐与碳酸钠反应。将9.2g碳酸钠加入8.4mL得醋酐,均匀润湿后分批加入13mL醋酸。搅拌一定时间后,经静置、干燥得产品24.6g。 还可将碳酸钠5.3g(0.05mol)和3mL水投入反应瓶,搅拌混合升温至40℃,开始交错滴加冰醋酸6.0g(0.1mol)和醋酐5.1g(0.05mol),滴完继续再70℃反应3h。冷却至室温,结晶过滤,滤液浓缩再结晶。合并两次晶体,烘干得产物13.7g,收率96.5%。 (3)乙酸与乙酸钠气相反应。以氮气或四氯化碳为流动介质,将醋酸钠和醋酸按化学式计量在硫化床反应器中,20-200℃下反应制得双乙酸钠。此法生产能力大,但条件控制严格,废气中得酸必须回收。(4)乙酸与乙酸钠在45%的乙醇中反应。将8.2g(0.1mol)醋酸钠加入5mL50%的乙醇。搅拌均匀后加热至60℃。开始滴加6.0g(0.1mol)醋酸钠,继续在60-80℃下搅拌反应4h。然后冷却至室温,静置结晶,过滤得白色晶体物,滤液浓缩后再结晶,烘干得双乙酸钠13.3g,收率93.7%。
  • MOL 文件:126-96-5.mol
  • 用途五:双乙酸钠是一种多功能的食用化学品。主要用作食品和饲料工业的防腐剂、防霉剂、螯合
  • 含量分析:醋酸钠含量取试样0.5g(准确至1mg),溶于50ml冰醋酸中。用0.1mo1/L过氯酸滴定,以电势法测定终点。每ml0.1mol/L过氯酸相当于醋酸钠(CH3COONa)8.203mg。 游离醋酸精确称取试样约4g,溶于50m1水中,加酚酞试液(TS-167)数滴,用1mol/L氢氧化钠滴定,每mL1mol/L氢氧化钠相当于醋酸(CH3COOH)60.05mg。
  • 方法二:由醋酸与等摩尔碳酸钠中和后,浓缩、精制、结晶而得。
  • FEMA:3900
  • 用途三:作防腐剂,我国规定可用于谷物和即食豆制食品,最大使用量为lg/kg。还可作为饲
  • 下游产品:环戊烯 --> 松脂醇 --> 3-甲基-2-丁烯-1-醇 --> 2-甲基-2-丁烯 --> 1-氯-3-甲基-2-丁烯 --> 2
  • MOL 文件:766-77-8.mol
  • 储运特性:库房通风低温干燥; 与氧化剂、酸类分开存放
  • 双乙酸钠是乙酸钠和乙酸的分子化合物,由短氢键缔合。白色吸湿性晶状粉沫,无毒,具有乙酸气味,易溶于水(1g/ml)和乙醇.加热至1500℃以上分解,散发出烟气及刺激性酸味。水溶液的PH值为4.5—5.0(10%水溶液)。
  • 蒸气压:8.82 psi ( 20 °C)
  • 用途五:双乙酸钠是一种多

系列性分类


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