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3-Cyclobutene-1,2-dione, 3,4-diethoxy-

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Formula: C8H10O4
CAS: 5231-87-8
search Element: cyclobutene diethoxy dione
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Identification

Structural Formula
3-Cyclobutene-1,2-dione, 3,4-diethoxy-
CAS:
5231-87-8
EINECS:
Molecular Formula:
C8H10O4
MDL:
MFCD00001333
SMILES:
CCOC1=C(C(=O)C1=O)OCC
Synonym:
timtec-bb sbb008498 ; squaric acid diethyl ester ; diethyl suquarate ; diethyl quadratate ; diethylsquarate98% ; diethyl squarate ; 3,4-diethoxycyclobutane-1,2-dione ; diethoxycyclobutenedione ; suquaric acid diethyl ester ; 1,2-diethoxycyclobutenedione




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Properties for 3-Cyclobutene-1,2-dione, 3,4-diethoxy-

Molecular Weight:
170.16 g·mol−1
Density:
1.15 g/mL at 25 °C(lit.)
Boiling point:
95 °C0.1 mm Hg(lit.)
Flash point:
>230 ºF
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Hazard Statements

GHS07

GHS03
Harmful
  • Acute toxicity (oral, dermal, inhalation), category 4
  • Skin irritation, categories 2, 3
  • Eye irritation, category 2A
  • Skin sensitization, category 1
  • Specific target organ toxicity following single exposure, category 3
    - Respiratory tract irritation
    - Narcotic effects
    • Not used
  • with the "skull and crossbones" pictogram
  • for skin or eye irritation if:
  • the "corrosion" pictogram also appears
  • the "health hazard" pictogram is used to indicate respiratory sensitization
GHS08

GHS08
Health hazard
  • Respiratory sensitization, category 1
  • Germ cell mutagenicity, categories 1A, 1B, 2
  • Carcinogenicity, categories 1A, 1B, 2
  • Reproductive toxicity, categories 1A, 1B, 2
  • Specific target organ toxicity following single exposure, categories 1, 2
  • Specific target organ toxicity following repeated exposure, categories 1, 2
  • Aspiration hazard, categories 1, 2

Safety & Transport Information

Risk Codes:
R36/37/38 - Irritating to eyes, respiratory system and skin
R42/43 - May cause sensitization by inhalation and skin contact
Safety Codes:
S23 - Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer)
S24 - Avoid contact with skin
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S37/39 - Wear suitable gloves and eye/face protection
S7 - Keep container tightly closed
Hazard Symbols:
Xn, Xi
Hazard symbol Xn Hazard symbol Xi
Storage temperature :
2-8°C
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Alternative Distributors of [3-Cyclobutene-1,2-dione, 3,4-diethoxy-]

Producers or manufacturers change the product range from time to time. The following companies
have appeared as suppliers in the past / currently not verified

Chemexcel International Ltd. | Unispec Chemicals Co. | Frinton Laboratories | Syntechem Co., Ltd. | Chemwill Asia Co.,Limited | New Fortune Industrial Co. Ltd. | Suzhou Rovathin Pharmatech Co., Ltd | East Chemical Industry Co., Ltd. | Jinan Great Chemical Co., Ltd. | Shanghai Raise Chemical Technology Co., Ltd. | Watson International Ltd | Yongyi Chemicals Group Co., Ltd. | Jinan Haohua Industry Co., Ltd. | Trademax Phamaceuticals & Chemicals Co., Ltd. | Gihi Chemicals Co., Limited | Hangzhou Dayangchem Co. Ltd.

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