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CAS: 520-45-6
分子式: C8H8O4
分子量: 168.15
沸点: 270℃
熔点: 109-112℃
中文名称: 
6-甲基-3-乙酰-2-哌咔酮
6-甲基-3-乙酰-α,γ-吡喃酮
6-甲基-3-乙酰哌咔酮-[2]
3-乙酰基-6-甲基-2H-吡喃-2,4(3H)二酮
脱氢醋酸
6-甲基-3-乙酰哌哢酮-[2]
脱氢乙酸
英文名称: 
3-Acetyl-6-methyl-2H-Pyran-2,4-(3H)dione
2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid -lactone
2H-Pyran-2,4(3H)-dione,3-acetyl-6-methyl-
2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid δ-lactone
3-Acetyl-4-hydroxy-6-methyl-2-pyrone
4(3H)-dione, 3-acetyl-6-methyl-2H-Pyran-2
3-acetyl-6-methyl-2h-pyran-4(3h)-dione
2-acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone
3-acetyl-4-hydroxy-6-methyl-2h-pyran-2-on
3-acetyl-4-hydroxy-6-methyl-2h-pyran-2-one
3-acetyl-6-methyl-2,4-pyrandione
3-acetyl-6-methyl-2h-pyran-2,4(3h)-dione
3-acetyl-6-methyl-2h-pyran-2,4(3h)-dione enol form
3-acetyl-6-methyl-2h-pyran-2,4(3h)-dione. enol form
3-acetyl-6-methyldihydropyrandione-2,4
3-acetyl-6-methylpyrandione-2,4
4-hexenoic acid, 2-acetyl-5-hydroxy-3-oxo, lactone
2-acetyl-5-hydroxy-3-oxo-4-hexenoic aci delta-lactone
dehydro-acetic aci
dehydracetic acid
dehydroacetic acid
dh aa
dha
dhaa
dhs
kyselina dehydroacetova
methylacetopyronone
3-Acetyl-6-methyl-2H-pyran-2,43H-dione
dehydro acetic acid
dehydroaceticacid
展开更多英文名
性质描述: 无色结晶，无臭，无味。熔点109-111℃，沸点269.9℃132-133℃（0.67kPa）。溶解度（W/W，25℃）；丙酮22%，苯18%，甲醇5%，四氯化碳3%，乙醇3%，水<0.1%。
生产方法: 常用的方法是乙酰乙酸乙酯脱醇缩合法和双乙烯缩合法。双乙烯酮法合成工艺具有成本低，得率高的优点。
用途: 脱氢乙酸是有机合成中间体、增韧剂，也是广谱性的食品防腐剂。自1940年发现其有抗菌性以来，先后得到许多国家的重视，并陆续得到用于食品防腐的允许。脱氢乙酸作为食品添加剂，允许用于干酪、黄油、人造奶油、清凉饮料、发酵乳及乳酸菌的饮料、豆酱、馅类等。作为食品添加剂一般使用脱氢乙酸钠。该品还用于日用化妆品、纤维制品、医药（如癣症的治疗），以及齿科材料的防腐。
推荐供应商
货号品牌产品名称规格包装、参考价格详情
D797884MACKLIN脱氢乙酸10mM in DMSO185元/1ml;   展开
储存：-20°C
D806983MACKLIN脱氢乙酸98%30元/25g;   46元/100g;   136元/500g;   355元/2.5kg;   展开
储存：室温
状态：白色到黄色粉末
D0039TCIDehydroacetic Acid>98.0%(GC)(T)185元/25G;   790元/500G;   展开

基本信息

纯度/分析方法>98.0%(GC)(T)
分子式/分子量C8H8O4 = 168.15
外观与形状(20℃)固体
Reaxys-RN6129
PubChem物质ID87566792
SDBS (AIST Spectral DB)3497
Merck Index (14)2865
MDL编号MFCD00066709

技术规格

AppearanceWhite to Light yellow to Light orange powder to crystal
Purity(GC)min. 98.0 %
Purity(Neutralization titration)min. 98.0 %
Melting point109.0 to 113.0 ℃
Solubility in Acetonealmost transparency

物性(参考值)

熔点111 ℃
沸点270 ℃
水溶性不溶
在水中的溶解度690 mg/l   25 ℃
溶解性(可溶于)乙醇,乙醚,丙酮,甲醇,苯

安全信息

图形或危害标志
信号词警告
危险性说明H302 : 吞咽有害。
防范说明P501 : 将内装物/容器送到批准的废物处理厂处理。
P270 : 使用本产品时不要进食、饮水或吸烟。
P264 : 作业后彻底清洗皮肤。
P301 + P312 + P330 : 如误吞咽：如感觉不适，呼叫急救中心/医生。漱口。

相关法规

RTECS#UP8050000
264873J&KDehydroacetic Acid98%85元/25G;   281元/100G;   713元/500G;   展开

基本信息

分子式C8H8O4
分子量168.15
沸点270
闪点157
MDL编码MFCD00066709
Beilstein6129
Merck14,2865
EINECS 编号208-293-9

安全信息

图形或危害标志
提示语Warning
危险说明H302
防范说明P305+P351+P338
WGK1
RTECSUP8050000
TSCA是
150739J&KDehydroacetic Acid98.5%118元/25G;   403元/100G;   展开

基本信息

分子式C8H8O4
分子量168.15
沸点270
闪点157
MDL编码MFCD00066709
Beilstein6129
Merck14,2865
EINECS 编号208-293-9

安全信息

图形或危害标志
提示语Warning
危险说明H302
防范说明P305+P351+P338
WGK1
RTECSUP8050000
TSCA是
A17827Alfa AesarDehydroacetic Acid98%364元/50g;   1125元/250g;   3759元/1000g;   展开

基本信息

MDL
MFCD00066709

EINECS
208-293-9

分子式
C8H8O4

分子量
168.15

熔点
109-113°

沸点
269-270°

闪点
157°(314°F)

形态
Powder

Beilstein
6129

Merck
14,2865

GHS危害和防范说明

GHS符号

Hazard Statements
H302
Harmful if swallowed.

Precautionary Statements
P264-P270-P301+P312a-P330-P501a
Wash thoroughly after handling.Do not eat, drink or smoke when using this product.Do not eat, drink or smoke when using this product.Rinse mouth.Dispose of contents/container in accordance with local/regional/national/international regulations.

安全信息

危险类别
22
Harmful if swallowed.

安全等级
2
Keep out of the reach of children.

欧盟危险品标志

RTECS
UP8050000

TSCA
是

C11194Alfa AesarDehydroacetic Acid98%541元/5g;   990元/100g;   4452元/500g;   展开

基本信息

Ref#
11194

MDL
66709

分子式
C8 H8 O4

分子量
168.15

R11141Alfa AesarDehydroacetic acid Standard solution100ppm210元/1ml;   展开
PHR1582SupelcoDehydroacetic AcidPharmaceutical Secondary Standard; Certified Reference Material1461.17元/1 G;   展开

产品说明

一般描述

脱氢乙酸是吡喃酮衍生物，通常由碱催化的双烯酮二聚反应合成。用作药品、食品和化妆品中的防腐剂。
用于质量控制的药物二级标准品，为制药实验室和制造商制备内部工作标准品提供了一种方便、高性价比的替代方案。

应用

脱氢乙酸可用作药物参考标准品，通过色谱法测定药品、食品和化妆品中的分析物。
这些二级标准品是经过检验的认证标准物质(CRM)。它们适用于多种分析应用，包括但不限于药物释放测试、药物的定性和定量分析方法开发、食品和饮料质量控制检测以及其他标定应用。

分析说明

这些二级标准品可追溯至USP、EP和BP一级标准品。

其他说明

该认证参考物质 (CRM) 根据ISO 17034和 ISO/IEC 17025进行生产和认证。所有关于此 CRM 的信息均记录在分析证书上。

附注

要查看该材料的分析证书示例，请在下面的栏位中输入 LRAA4498。这只是一个示例证书，可能不是您收到的批次。

基本信息

经验(实验)分子式C8H8O4
分子量168.15
Beilstein6129
EC 号208-293-9
MDL编号MFCD00066709
PubChem化学物质编号329823490
NACRESNA.24

产品性质

质量水平300
等级certified reference material
pharmaceutical secondary standard
CofAcurrent certificate can be downloaded
包装pkg of 1 g
technique(s)HPLC: suitable
gas chromatography (GC): suitable
bp270 ℃ (lit.)
mp111-113 ℃ (lit.)
application(s)pharmaceutical (small molecule)
格式neat
药典可追溯性traceable to USP 1166309
储存温度2-30℃
SMILES stringCC(=O)C1C(=O)OC(C)=CC1=O
InChI1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
InChI keyPGRHXDWITVMQBC-UHFFFAOYSA-N

安全信息

象形图GHS07
警示用语：Warning
危险声明H302
预防措施声明P264 - P270 - P301 + P312 - P501
危险分类Acute Tox. 4 Oral
储存分类代码13 - Non Combustible Solids
WGKWGK 1
闪点(F)314.6 °F
闪点(C)157 ℃
1166309USPDehydroacetic AcidUnited States Pharmacopeia (USP) Reference Standard3487.56元/200 MG;   展开

产品说明

一般描述

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

分析说明

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

其他说明

USP issued SDS can be found here.
Sales restrictions may apply.

基本信息

经验(实验)分子式C8H8O4
分子量168.15
Beilstein6129
MDL编号MFCD00066709
PubChem化学物质编号329749528
NACRESNA.24

产品性质

等级pharmaceutical primary standard
manufacturer/tradenameUSP
bp270 ℃ (lit.)
mp111-113 ℃ (lit.)
application(s)pharmaceutical (small molecule)
格式neat
SMILES stringCC(=O)C1C(=O)OC(C)=CC1=O
InChI1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
InChI keyPGRHXDWITVMQBC-UHFFFAOYSA-N

安全信息

象形图GHS07
警示用语：Warning
危险声明H302
预防措施声明P264 - P270 - P301 + P312 - P501
危险分类Acute Tox. 4 Oral
储存分类代码13 - Non Combustible Solids
WGKWGK 1
闪点(F)314.6 °F
闪点(C)157 ℃
8.22011Sigma-AldrichDehydroacetic Acidfor synthesis233.89元/5 G;   301.45元/250 G;   402.97元/1 KG;   展开

产品说明

分析说明

Assay (acidimetric): ≥ 99.0 %
Melting range (lower value): ≥ 109 °C
Melting range (upper value): ≤ 112 °C
Identity (IR): passes test

基本信息

经验(实验)分子式C8H8O4
分子量168.15
MDL编号MFCD00066709
EC索引号208-293-9

产品性质

质量水平200
蒸汽压0.001 hPa ( 20 ℃)
测定≥99.0% (acidimetric)
形式powder
自燃温度336 ℃
效能1000 mg/kg LD50, oral (Rat)
pH值(酸碱度)4 (20 ℃, 2 g/L in H2O)
bp270 ℃/1013 hPa
mp109-111 ℃
转变温度flash point 157 ℃
堆积密度700 kg/m3
储存温度2-30℃
InChI1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
InChI keyPGRHXDWITVMQBC-UHFFFAOYSA-N

安全信息

象形图GHS07
警示用语：Warning
危险声明H302
预防措施声明P264 - P270 - P301 + P312 - P501
危险分类Acute Tox. 4 Oral
储存分类代码13 - Non Combustible Solids
WGKWGK 1
闪点(F)314.6 °F
闪点(C)157 ℃
30740Sigma-AldrichDehydroacetic Acid≥98.0% (T)632.1元/100 G;   1098.63元/500 G;   展开

产品说明

一般描述

脱氢乙酸是红葡萄酒中的一种食品添加剂，其可通过超快速液相色谱-串联四极杆质谱(UFLC-MS/MS)进行测定。

包装

100, 500 g in poly bottle

基本信息

经验(实验)分子式C8H8O4
分子量168.15
Beilstein6129
EC 号208-293-9
MDL编号MFCD00066709
PubChem化学物质编号57648475
NACRESNA.22

产品性质

质量水平100
测定≥98.0% (T)
bp270 ℃ (lit.)
mp111-113 ℃ (lit.)
SMILES stringCC(=O)C1C(=O)OC(C)=CC1=O
InChI1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
InChI keyPGRHXDWITVMQBC-UHFFFAOYSA-N

安全信息

象形图GHS07
警示用语：Warning
危险声明H302
预防措施声明P264 - P270 - P301 + P312 - P501
危险分类Acute Tox. 4 Oral
储存分类代码13 - Non Combustible Solids
WGKWGK 1
闪点(F)314.6 °F
闪点(C)157 ℃
个人防护装备dust mask type N95 (US), Eyeshields, Faceshields, Gloves
079475Fluorochem3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione95%330元/100g;   1386元/500g;   展开

基本信息

CAS Number520-45-6
MDL NumberMFCD00066709
Melting Point111.1℃
Density1.448

安全信息

图形或危害标志
危险性说明 H302: Harmful if swallowed.
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
防范说明 P233: Keep container tightly closed.
P260: Do not breathe .
P261: Avoid breathing
P264: Wash hands thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P271: Use only outdoors or in a well-ventilated area.
P280: Wear .
P301 + P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304: IF INHALED: .
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P312: Call a POISON CENTER or doctor/physician if you feel unwell.
P321: Specific treatment (see . on this label).
P330: Rinse mouth.
P332 + P313: If skin irritation occurs: Get medical advice/ attention.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P340: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P362: Take off contaminated clothing and wash before reuse.
P403: Store in a well-ventilated place.
P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
P405: Store locked up.
P501: Dispose of contents/container to local regulations.
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