Home Cart Sign in  
Chemical Structure| 63221-88-5 Chemical Structure| 63221-88-5
Chemical Structure| 63221-88-5

*Storage: Sealed in dry,Room Temperature.

1-Ethyl-4-((4-methoxyphenyl)ethynyl)benzene

CAS No.: 63221-88-5

4.5 *For Research Use Only !

Cat. No.: A623454 Purity: 98%

Change View

Size Price

USA Stock *0-1 Day

Global Stock *5-7 Days

In Stock
5g łËͶÊÊ Inquiry In Stock Login
25g łďǶÊÊ In Stock In Stock Login
100g łËËî¶ÊÊ In Stock In Stock Login

Please Login or Create an Account to: See VIP prices and availability

  • 5g

    łËͶÊÊ

  • 25g

    łďǶÊÊ

  • 100g

    łËËî¶ÊÊ

In Stock

- +

Please Login or Create an Account to: See VIP prices and availability

  • 1-2 Day Shipping
  • High Quality
  • Technical Support Online Technical Q&A
Product Citations

Product Citations      Show More

Liu, Yuan ; Kannan, Kurunthachalam ;

Abstract: (LCMs) are biphenyl- or cyclohexane-basedorganic chemicals used in electronic digital displays, and several of them possessbioaccumulative and toxic properties. Little is known about their occurrence in indoordust from the United States. We analyzed 60 LCMs in 104 residential indoor dustsamples collected from 16 states across the United States. Forty-seven of 60 LCMswere detected in dust samples at a median ∑LCM concentration of 402 ng/g (range:not detected to 4300 ng/g). Trans-4-propylcyclohexyl trans,trans-4’-propylbicyclohexyl-4-carboxylate (MPVBC) and (trans,trans)-4-fluorophenyl 4’-pentyl-[1,1’-bi-(cyclohexane)]-4-carboxylate (FPeBC) were frequently detected in dust samples. Weinvestigated potential sources of LCMs in dust by determining concentrations andprofiles of these chemicals in smartphone screens, desktop and laptop computermonitors, and displays of other electronic devices and found that profiles insmartphones matched closely with those found in dust. The calculated median dailyintake of ∑LCM through dust ingestion was 1.19 ng/kg bw/d for children, whereas that through dermal absorption was 0.18 ng/kgbw/d for adults in the United States.

Keywords: liquid crystal monomers ; dust ; exposure ; digital displays ; LCD

Purchased from AmBeed: ; ; ;

Yuan Liu ; Wen-Long Li ; Zhong-Min Li , et al.

Abstract: Liquid crystal monomers (LCMs) are synthetic organic chemicals widely used in the manufacture of liquid crystal displays (LCDs) of digital electronic devices. As human interactions with digital electronics such as computers and smartphones intensify, exposure to LCMs is a public health concern. Nevertheless, there is limited research on the occurrence of LCMs in biological and non-biological matrices. We developed a method to determine 60 LCMs in electronic-waste panels (i.e., computer monitors), indoor dust, feces, and urine using gas chromatography–mass spectrometry (GC–MS). Solid matrices (i.e., dust and feces) were extracted using a solid-liquid extraction (SLE) procedure whereas liquid matrices (i.e., urine) were extracted using solid phase extraction (SPE). Indoor dust and feces extracts were purified by passage through silica gel packed gravity columns. The method limits of detection (LODs) and quantification (LOQs) were in the ranges of 0.05–13.0 and 0.18–39.1 ng/mL, respectively. Recoveries of all target analytes fortified at concentrations of 10 and 100 ng/mL on LCD panels, dust, feces, and urine were in the range of 71–130%, with standard deviations of 0.01–33%. Repeated analyses of similarly fortified samples yielded intra-day and inter-day variations (CV) of 0.32–12.6% and 0.76–14.3%, respectively. Matrix effects, calculated from fortified matrices, ranged from −28.5% to 28.5%. The method was applied in the analysis of LCD panels, indoor dust, dog feces and urine, which were found to contain 22, 42, 46, and 18 of the 60 targeted LCMs, respectively. LCMs were found in LCD panels (∑LCM = 1780 ± 165 ng/cm2 for desktop computer monitors; and 166,900 ± 80,100 ng/cm2 for smartphone screens), indoor dust (∑LCM = 2030 ± 1260 ng/g), dog feces (∑LCM = 1990 ± 2000 ng/g dw), and urine (∑LCM = 24.0 ± 14.6 ng/mL). The developed method can be applied in the analysis of LCMs in a wide range of environmental and biological samples.

Keywords: Liquid crystal monomers ; Electronic-waste ; Dust ; Feces ; Urine ; Monitoring

Product Details of [ 63221-88-5 ]

CAS No. :63221-88-5
Formula : C17H16O
M.W : 236.31
SMILES Code : COC1=CC=C(C#CC2=CC=C(CC)C=C2)C=C1
MDL No. :MFCD00807428
InChI Key :YWDALJMLXXWXFP-UHFFFAOYSA-N
Pubchem ID :3952083

Safety of [ 63221-88-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H413
Precautionary Statements:P264-P273-P280-P302+P352-P305+P351+P338-P332+P313-P337+P313-P362+P364-P501
 

Related Products

Historical Records

Technical Information

Categories

Related Functional Groups of
[ 63221-88-5 ]

Aryls

Chemical Structure| 258283-96-4

A463011 [258283-96-4]

1-Ethoxy-4-((4-ethylphenyl)ethynyl)benzene

Similarity: 0.94

Chemical Structure| 35684-12-9

A327911 [35684-12-9]

1-Butyl-4-((4-methoxyphenyl)ethynyl)benzene

Similarity: 0.91

Chemical Structure| 39969-29-4

A778041 [39969-29-4]

1-Ethoxy-4-((4-propylphenyl)ethynyl)benzene

Similarity: 0.89

Chemical Structure| 7380-78-1

A881869 [7380-78-1]

1-Methoxy-4-(phenylethynyl)benzene

Similarity: 0.88

Chemical Structure| 2132-62-9

A269979 [2132-62-9]

1,2-Bis(4-methoxyphenyl)ethyne

Similarity: 0.88

Alkynyls

Chemical Structure| 258283-96-4

A463011 [258283-96-4]

1-Ethoxy-4-((4-ethylphenyl)ethynyl)benzene

Similarity: 0.94

Chemical Structure| 35684-12-9

A327911 [35684-12-9]

1-Butyl-4-((4-methoxyphenyl)ethynyl)benzene

Similarity: 0.91

Chemical Structure| 39969-29-4

A778041 [39969-29-4]

1-Ethoxy-4-((4-propylphenyl)ethynyl)benzene

Similarity: 0.89

Chemical Structure| 7380-78-1

A881869 [7380-78-1]

1-Methoxy-4-(phenylethynyl)benzene

Similarity: 0.88

Chemical Structure| 2132-62-9

A269979 [2132-62-9]

1,2-Bis(4-methoxyphenyl)ethyne

Similarity: 0.88

Ethers

Chemical Structure| 258283-96-4

A463011 [258283-96-4]

1-Ethoxy-4-((4-ethylphenyl)ethynyl)benzene

Similarity: 0.94

Chemical Structure| 35684-12-9

A327911 [35684-12-9]

1-Butyl-4-((4-methoxyphenyl)ethynyl)benzene

Similarity: 0.91

Chemical Structure| 39969-29-4

A778041 [39969-29-4]

1-Ethoxy-4-((4-propylphenyl)ethynyl)benzene

Similarity: 0.89

Chemical Structure| 7380-78-1

A881869 [7380-78-1]

1-Methoxy-4-(phenylethynyl)benzene

Similarity: 0.88

Chemical Structure| 2132-62-9

A269979 [2132-62-9]

1,2-Bis(4-methoxyphenyl)ethyne

Similarity: 0.88