3,4-Dihydroxy-3-cyclobutene-1,2-dione

• Catalog No.: 123447
• CAS Number: 2892-51-5
• M. F.: C4H4O4
• M. W.: 116.07216
• Purity: 99%

SYNONYMS

• Title: 3,4-二羟基-3-环丁烯-1,2-二酮
• IUPAC name: 3,4-dihydroxycyclobutane-1,2-dione
• IUPAC Traditional name: 3,4-dihydroxycyclobutane-1,2-dione
• Synonyms: 方形酸; Squaric acid

DATABASE IDS

• EC Number: 220-761-4
• CAS Number: 2892-51-5
• MDL Number: MFCD00001334
• PubChem SID: 24847567
• Beilstein Number: 774275

PROPERTIES

• Linear Formula: (HO)2C4(=O)2
• Purity: 99%
• Melting Point: >300 °C(lit.)
• GHS Signal Word: Warning
• GHS Hazard statements: H315-H317-H319-H335
• European Hazard Symbols: Irritant (Xi)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Faceshields, Gloves
• GHS Precautionary statements: P261-P280-P305 + P351 + P338
• Risk Statements: 36/37/38-43
• RTECS: GU1800000
• Safety Statements: 26-36
• German water hazard class: 3

DETAILS

Description (English)

Application
Treatment with oxalyl chloride provides dichlorocyclobutenedione, a key material in cyclobutene chemistry.1
Used to synthesize photoconducting squaraines and squarylium dyes.
Packaging
25, 100 g in poly bottle
5 g in glass bottle

Description (简体中文)

Application
用于合成光导方酸菁 和方酸类染料。
用草酰氯处理生成二氯环丁烯二酮（环丁烯化工里的重要原料）。1
包装
25, 100 g in poly bottle
5 g in glass bottle