| 货号 | 品牌 | 产品名称 | 规格 | 包装、参考价格 | 详情 |
| S817767 | MACKLIN | 方酸 | 98% | 30元/1g; 98元/5g; 388元/25g; 1405元/100g; 6288元/500g; | 展开 |
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| D1399 | TCI | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | >98.0%(T)(HPLC) | 570元/5G; 1740元/25G; | 展开 |
基本信息 | 纯度/分析方法 | >98.0%(T)(HPLC) | | 分子式/分子量 | C4H2O4 = 114.06 | | 外观与形状(20℃) | 固体 | | Reaxys-RN | 774275 | | PubChem物质ID | 87567905 | | SDBS (AIST Spectral DB) | 3743 | | Merck Index (14) | 8769 | | MDL编号 | MFCD00001334 |
技术规格 | Appearance | White to Light yellow powder to crystal | | Purity(HPLC) | min. 98.0 area% | | Purity(Neutralization titration) | min. 98.0 % |
安全信息 | 图形或危害标志 |  | | 信号词 | 警告 | | 危险性说明 | H315 : 造成皮肤刺激。
H319 : 造成严重眼刺激。
| | 防范说明 | P264 : 作业后彻底清洗皮肤。
P280 : 戴防护手套/戴防护眼罩/戴防护面具。
P302 + P352 : 如皮肤沾染：用水充分清洗。
P337 + P313 : 如仍觉眼刺激：求医/就诊。
P305 + P351 + P338 : 如进入眼睛：用水小心冲洗几分钟。如戴隐形眼镜并可方便地取出，取出隐形眼镜。继续冲洗。
P362+P364 : 脱掉沾污的衣服，清洗后方可重新使用。
P332 + P313 : 如发生皮肤刺激：求医/就诊。
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相关法规 |
| 311369 | J&K | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | 99% | 417元/5G; 1428元/25G; | 展开 |
基本信息 | 分子式 | C4H2O4 | | 分子量 | 114.06 | | 熔点 | >300 | | 闪点 | 190 | | MDL编码 | MFCD00001334 | | Beilstein | 774275 | | EINECS 编号 | 220-761-4 |
安全信息 | 图形或危害标志 | | | 提示语 | Warning | | 危险说明 | H315
H317
H319
H335 | | 防范说明 | P261
P280
P305+P351+P338 | | WGK | 3 | | RTECS | GU1800000 | | TSCA | 是 |
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| A15169 | Alfa Aesar | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | 98+% | 461元/1g; 1166元/5g; 4175元/25g; 13473元/100g; | 展开 |
应用
3,4-Dihydroxy-3-cyclobutene-1,2-dione is used to produce diethoxy-cyclobutenedione by heating, pharmaceutical intermediates, squarylium dyes, and photoconducting squaraines; The dibutylester is used as a contact sensitizer in the treatment of alopecia and warts. 备注
Keep container tightly closed. Store in cool, dry conditions in well sealed containers. 基本信息 MDL
MFCD00001334 EINECS
220-761-4 分子式
C4H2O4 分子量
114.06 熔点
>300° 闪点
190°(374°F) 灵敏度
Ambient temperatures. 形态
Powder 溶解性
Soluble in water. Beilstein
774275 GHS危害和防范说明 GHS符号
Hazard Statements
H315-H319-H317-H335
Causes skin irritation.Causes serious eye irritation.May cause an allergic skin reaction.May cause respiratory irritation. Precautionary Statements
P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves and eye/face protection.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations. 安全信息 危险类别
36/37/38-43
Irritating to eyes, respiratory system and skin.May cause sensitization by skin contact. 安全等级
20-26-36/37/39-45
When using do not eat or drink.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). RTECS
GU1800000 TSCA
是 |
| C15402 | Alfa Aesar | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | 99% | 1035元/5g; 3239元/25g; 13606元/100g; | 展开 |
基本信息 Ref#
15402 MDL
1334 分子式
C4 H2 O4 分子量
114.06 闪点
190 |
| 123447 | Sigma-Aldrich | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | ≥99.0% (HPLC) | 426.06元/5 G; 1316.1元/25 G; 4775.11元/100 G; | 展开 |
产品说明 一般描述 3,4-二羟基-3-环丁烯-1,2-二酮，俗称方酸，广泛用于生物有机和药物化学。它是乙二醛酶、 semiqauric acid 、丙酮酸脱氢酶和转酮醇酶的抑制剂。 它可用作SH2结构域的肽配体中磷酸盐的替代物。它的衍生物是兴奋性氨基酸受体的高亲和力配体。这些衍生物也可用作小生物分子荧光检测用染料。 应用 3,4-二羟基-3-环丁烯-1,2-二酮可用于： - 免疫分析、杂交分析、酶促反应和其他分析过程中的荧光检测。
- 形成衍射级晶体。
- 合成方酸(squaate)二价阴离子，其可用作构建不带电聚合物网络的结构单元。这些有序的结构可用于催化、非线性光学、电导、分子识别和分子筛。
包装 5 g in glass bottle
25, 100 g in poly bottle 基本信息 | 线性分子式 | (HO)2C4(=O)2 | | 分子量 | 114.06 | | Beilstein | 774275 | | EC 号 | 220-761-4 | | MDL编号 | MFCD00001334 | | PubChem化学物质编号 | 24847567 | | NACRES | NA.23 |
产品性质 | 质量水平 | 200 | | 测定 | ≥99.0% (HPLC) | | mp | >300 ℃ (lit.) | | SMILES string | OC1=C(O)C(=O)C1=O | | InChI | 1S/C4H2O4/c5-1-2(6)4(8)3(1)7/h5-6H | | InChI key | PWEBUXCTKOWPCW-UHFFFAOYSA-N |
安全信息 | 象形图 |  | | 警示用语： | Danger | | 危险声明 | H314 | | 预防措施声明 | P260 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 | | 危险分类 | Eye Dam. 1 - Skin Corr. 1B | | 储存分类代码 | 8A - Combustible, corrosive hazardous materials | | WGK | WGK 3 | | 闪点(F) | 374.0 °F | | 闪点(C) | 190 ℃ | | 个人防护装备 | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
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| 953971 | Amethyst | 3,4-Dihydroxy-3-cyclobutene-1,2-dione | 99%, 用于合成 | 76元/5G; 255元/25G; 774元/100G; | 展开 |
基本信息 | 分子式 | C4H2O4 | | 分子量 | 114.06 | | 熔点 | >300 | | 闪点 | 190 | | MDL编码 | MFCD00001334 | | Beilstein | 774275 | | EINECS 编号 | 220-761-4 |
安全信息 | 图形或危害标志 | | | 提示语 | Warning | | 危险说明 | H315
H317
H319
H335 | | 防范说明 | P261
P280
P305+P351+P338 | | WGK | 3 | | RTECS | GU1800000 | | TSCA | 是 |
|
| 049600 | Fluorochem | 1,2-Dihydroxycyclobutenedione | 98% | 242元/5g; 770元/10g; 990元/25g; 2090元/100g; 8250元/500g; | 展开 |
基本信息 | CAS Number | 2892-51-5 | | MDL Number | MFCD00001334 | | Melting Point | >300℃ | | Density | 1.82 |
安全信息 | 图形或危害标志 | | | 危险性说明 | H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
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.
P271: Use only outdoors or in a well-ventilated area.
P272: Contaminated work clothing should not be allowed out of the workplace.
P280: Wear .
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).
P332 + P313: If skin irritation occurs: Get medical advice/ attention.
P333 + P313: If skin irritation or rash 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.
P363: Wash contaminated clothing 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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