CAS 2892-51-5 MFCD00001334-3,4-Dihydroxy-3-cyclobutene-1,2-dione 3,4-二羟基-3-环丁烯-1,2-二酮 TAO{mole}

3,4-Dihydroxy-3-cyclobutene-1,2-dione 3,4-二羟基-3-环丁烯-1,2-二酮

CAS 2892-51-5 MFCD00001334

化学结构图

SMILES: O=c1c(O)c(O)c1=O

化学属性

Mol. Formula	C4H2O4
Mol. Weight	114.05628
Melting Point	>300°C
Density	2.415
Flash Point	190°(374°F)
TSCA	Yes
Solubility	20 G/L (30 ºC)
pH	:A
Boiling Point	250.96 °C at 760 mmHg

别名和识别编码

Chemical Name	3,4-Dihydroxy-3-cyclobutene-1,2-dione
CAS Number	2892-51-5
Alfabeta Name	DIHYDROXYCYCLOBUTENEDIONE 34312-----,,
MDL Number	MFCD00001334
Synonym	3,4-Dihydroxy-3-cyclobutene-1,2-dione {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione squaric acid squaric acid, dipotassium salt squaric acid, disilver (+1) salt squaric acid, disodium salt squaric acid, monopotassium salt squaric acid, monopotassium salt monohydrate squaric acid, nickel (+2), (1:1) salt dihydrate {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dione {} {} {} {} {} {} {} {} {} {} {LY} 3,4-Dihydroxy-3-cyclobutene-1,2-dion
EC Number	220-761-4
Beilstein Registry Number	774275
PubChem Substance ID	17913
Reaxys-RN	774275
Merck Number	8769
Chemical Name Translation	3,4-二羟基-3-环丁烯-1,2-二酮
Wiswesser Line Notation	L4VVTJ CQ DQ
LabNetwork Molecule ID	LN00170294
InChI	InChI=1S/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H
Canonical SMILES	O=C1C(C(O)=C1O)=O

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品牌质保精细包装现货库存一流品牌服务

产品应用

可作为酰化试剂，与富电活化芳环进行酰化反应。与含活泼双键、活泼甲基反应，生成具特殊性能的新化合物。用作合成有机光导体、液晶显示材料、激光书写记录材料及静电照相光受体材料的中间体。

安全信息

Warnings CORROSIVE

GHS Symbol

WGK Germany3

Hazard statements

H315 Causes skin irritation 会刺激皮肤
H317 May cause an allergic skin reaction 可能导致皮肤过敏
H319 Causes serious eye irritation 严重刺激眼睛
H335 May cause respiratory irritation 可能导致呼吸道刺激

Personal Protective Equipment dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Hazard Codes Xi

RTECSGU1800000

Precautionary statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
P264 Wash hands thoroughly after handling. 处理后要彻底洗净双手。
P264+P265
P271 Use only outdoors or in a well-ventilated area.? 只能在室外或通风良好的地方使用。
P272 Contaminated work clothing should not be allowed out of the workplace. 污染的工作服不得带出工作场所。
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。
P302+P350
P302+P352
P302+P352+P332+P313+P362+P364
P304+P340
P305+P351+P338
P305+P351+P338+P337+P313
P312 Call a POISON CENTER or doctor/physician if you feel unwell. 如果你感觉不适，呼叫解毒中心或医生/医师。
P319
P321 Specific treatment (see … on this label). 具体治疗（见本标签上的）。
P332+P313
P332+P317
P333+P313
P333+P317
P337+P313
P337+P317
P362 Take off contaminated clothing and wash before reuse. 脱掉污染的衣服，清洗后方可重新使用
P362+P364
P363 Wash contaminated clothing before reuse. 被污染的衣服洗净后方可重新使用。
P403+P233
P405 Store locked up. 上锁保管。
P501 Dispose of contents/container to..… 处理内容物/容器.....

Signal word Warning

Safety Statements

S20 When using do not eat or drink 使用时，不得进食，饮水；
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 Wear suitable protective clothing 穿戴适当的防护服；
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/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）；

Risk Statements

R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
R43 May cause sensitisation by skin contact 皮肤接触会产生过敏反应

UN Number UN3261 3261

Packing GroupII

Hazard Class8

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Subcutaneous
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 368 mg/kg/92W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Tumorigenic - tumors at site of application
REFERENCE :
   JNCIAM Journal of the National Cancer Institute.  (Washington, DC)  V.1-60,
   1940-78.  For publisher information, see JJIND8.  Volume(issue)/page/year:
   46,143,1971

Storage condition Store at room temperature {LY} Store at room temperature {} {LY} Store at room temperature {} {} {LY} Store at room temperature {} {} {} {LY} Store at room temperature {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}

其他信息

海关编码:29144090
Sigma Aldrich:2892-51-5(sigmaaldrich)
TCI Shanghai:3,4-二羟基-3-环丁烯-1,2-二酮(聚合物的紫外吸收剂) 3,4-Dihydroxy-3-cyclobutene-1,2-dione,>;98.0%(LC)(T)(2892-51-5)
用途一:可作为酰化试剂，与富电活化芳环进行酰化反应。与含活泼双键、活泼甲基反应，生成具特殊性能的新化合物。用作合成有机光导体、液晶显示材料、激光书写记录材料及静电照相光受体材料的中间体。
具强酸性，其pKl=1.5；pK2=3.5。与三氯化铁水溶液产生深紫色。可被溴及高锰酸钾氧化，与苯肼无反应。性质与羧酸相似，可与碱成盐，可生成酯、酰氯、酰胺及混合酸酐。水中溶解度:20 G/L (30°C)。
外观性质:具强酸性，其pKl=1.5；pK2=3.5。与三氯化铁水溶液产生深紫色。可被溴及高锰酸钾氧化，与苯肼无反应。性质与羧酸相似，可与碱成盐，可生成酯、酰氯、酰胺及混合酸酐。水中溶解度:20 G/L (30°C)。熔点:300 °C 闪点:190 °C
方酸价格(试剂级):更新日期产品编号产品名称包装价格 2011/04/16 D1399 3,4-二羟基-3-环丁烯-1,2-二酮 3,4-Dihydroxy-3-cyclobutene-1,2-dione 25G 1890元 2011/04/16 D1399 3,4-二羟基-3-环丁烯-1,2-二酮 3,4-Dihydroxy-3-cyclobutene-1,2-dione 5G 682元 2010/06/21 154021000 方酸 3,4-Dihydroxy-3-cyclobutene-1,2-dione 99% 100 GR 6715元
图谱信息:方酸(2892-51-5)红外图谱(IR1) 方酸(2892-51-5)红外图谱(IR2) 方酸(2892-51-5)质谱(MS)
Hazard Note:Irritant
Acros Organics:3,4-二羟基-3-环丁烯-1,2-二酮 3,4-Dihydroxy-3-cyclobutene-1,2-dione, 99%(2892-51-5)
MOL 文件:2892-51-5.mol
MSDS 信息:3,4-Dihydroxy-3-cyclobutene-1,2-dione(2892-51-5).msds
方酸价格(试剂级):更新日期产品编号产品名称包装价格 2014/06/02 D1399 3,4-二羟基-3-环丁烯-1,2-二酮 3,4-Dihydroxy-3-cyclobutene-1,2-dione 25G 1670元 2014/06/02 D1399 3,4-二羟基-3-环丁烯-1,2-二酮 3,4-Dihydroxy-3-cyclobutene-1,2-dione 5G 539元 2010/06/21 154021000 方酸 3,4-Dihydroxy-3-cyclobutene-1,2-dione 99% 100 GR 6715元
Alfa Aesar:3,4-二羟基-3-环丁烯-1,2-二酮,98+% 3,4-Dihydroxy-3-cyclobutene-1,2-dione, 98+%(2892-51-5)