白色结晶体或结晶粉末,有酸味。不溶于乙醇和乙醚。燃烧产生有毒氨氧化物烟雾。
由反丁烯二酸、氨在三叶草假单胞菌或产氨短杆菌的天冬氨酸酶作用下得到。
可作为生化试剂、培养基和有机合成中间体。在医药上作为心脏病类药物、肝功能促进剂、氨解毒剂、疲劳消除剂和氨基酸输液的成分。也用于食品工业的保鲜剂等。
中文名 | L-天门冬氨酸 |
英文名 | L(+)-Aspartic acid |
别名 | L-天冬酸 L-抗坏血酸 L-天冬氨酸 L-天门冬氨酸 L-天冬门氨酸 (S)-氨基丁二酸 (S)-(+)-氨基琥珀酸 天冬氨酸 (ASP)溶液,100PPM L-天门冬氨酸 L-ASPARTIC ACID |
英文别名 | H-Asp-OH asparagicacid Asparagic acid L-Aspantic acid asparaginsaeure L-Aspartic acid asparaginicacid Asparaginic acid L-Asparaginic acid L(+)-Aspartic acid (s)-butanedioicaci L-(+)-Aspartic acid L-Aminosuccinic acid alpha-Aminosuccinic acid L-2-Aminobutanedioic acid |
CAS | 56-84-8 |
EINECS | 200-291-6 |
化学式 | C4H7NO4 |
分子量 | 133.1 |
InChI | InChI=1/C4H7NO4/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H,6,7)(H,8,9)/t2-/m0/s1 |
InChIKey | CKLJMWTZIZZHCS-REOHCLBHSA-N |
密度 | 1.66 |
熔点 | >300°C (dec.)(lit.) |
沸点 | 245.59°C (rough estimate) |
比旋光度 | 25 º (c=8, 6N HCl) |
水溶性 | 5 g/L (25 ºC) |
JECFA Number | 1429 |
溶解度 | H2O: 5 mg/mL |
折射率 | 1.4540 (estimate) |
酸度系数 | 1.99(at 25℃) |
PH值 | 2.5-3.5 (4g/l, H2O, 20℃) |
存储条件 | Store below +30°C. |
稳定性 | 稳定。可燃。与强氧化剂不相容。 |
外观 | 粉末 |
颜色 | White |
气味 | acid taste |
最大波长(λmax) | ['λ: 260 nm Amax: 0.20', , 'λ: 280 nm Amax: 0.10'] |
Merck | 14,840 |
BRN | 1723530 |
物化性质 | 呈白色结晶或结晶性粉末,味微酸。溶于沸水,25℃时微溶于水 (0.5%),易溶于稀酸和氢氧化钠溶液中,不溶于乙醇、乙醚、加热至270℃分解,等电点2.77,其比旋度与所溶的溶剂有关。在酸溶液中为右旋,碱溶液中为左旋,水溶液中为右旋。[α]25D+5.05 (C=0.5-2.0 g/ml, H2O)。 |
MDL号 | MFCD00002616 |
危险品标志 | Xi - 刺激性物品 Xn - 有害物品 |
风险术语 | R36 - 刺激眼睛。 R36/37/38 - 刺激眼睛、呼吸系统和皮肤。 R20/21/22 - 吸入、皮肤接触及吞食有害。 |
安全术语 | S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 S24/25 - 避免与皮肤和眼睛接触。 S22 - 切勿吸入粉尘。 S36 - 穿戴适当的防护服。 |
WGK Germany | 2 |
RTECS | CI9098500 |
FLUKA BRAND F CODES | 10 |
TSCA | Yes |
海关编号 | 29224995 |
Hazard Class | IRRITANT |
上游原料 | 氨水 反丁烯二酸 碳 硫酸 液氨 |
下游产品 | L-丙氨酸 DL-天门冬氨酸 L-天门冬氨酸钙 |
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白色结晶体或结晶粉末,有酸味。不溶于乙醇和乙醚。燃烧产生有毒氨氧化物烟雾。
由反丁烯二酸、氨在三叶草假单胞菌或产氨短杆菌的天冬氨酸酶作用下得到。
可作为生化试剂、培养基和有机合成中间体。在医药上作为心脏病类药物、肝功能促进剂、氨解毒剂、疲劳消除剂和氨基酸输液的成分。也用于食品工业的保鲜剂等。
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