2D

3D

Save

Zoom

Cyclotetrasiloxane, 2,2,4,4,6,6,8-heptamethyl-

ChemSpider ID: 25560
Molecular Formula: C₇H₂₂O₄Si₄
Monoisotopic mass: 282.059509 Da
Systematic name

2,2,4,4,6,6,8-Heptamethyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane
SMILES and InChIs

SMILES:

O1[Si](O[Si](O[Si](O[SiH]1C)(C)C)(C)C)(C)C Copied

Std. InChI:

InChI=1S/C7H22O4Si4/c1-12-8-13(2,3)10-15(6,7)11-14(4,5)9-12/h12H,1-7H3 Copied

Std. InChIKey:

CLTMUXYRYKDGOK-UHFFFAOYSA-N Copied

Names and Identifiers

ChemSpider Searches

Data supplied by datasources and users.

experimental physchem properties
- Melting Point: -27
- Flash Point: 46ï¿½C (115ï¿½F)
- Specific Gravity: 0.958
- Refraction Index: 1.3965
predicted physchem properties
- Boiling Point: 165

Predicted data is generated using the ACD/Labs’ ACD/PhysChem Suite, for more information see their website.

ACD/LogP:		# of Rule of 5 Violations:
ACD/LogD (pH 5.5):		ACD/LogD (pH 7.4):
ACD/BCF (pH 5.5):		ACD/BCF (pH 7.4):
ACD/KOC (pH 5.5):		ACD/KOC (pH 7.4):
#H bond acceptors:	4	#H bond donors:	0
#Freely Rotating Bonds:	0	Polar Surface Area:	36.92 Å²
Index of Refraction:		Molar Refractivity:	cm³
Molar Volume:	cm³	Polarizability:	10^-24cm³
Surface Tension:	dyne/cm	Density:	g/cm³
Flash Point:	59.234 °C	Enthalpy of Vaporization:	39.381 kJ/mol
Boiling Point:	174.331 °C at 760 mmHg	Vapour Pressure:	1.62399995326996 mmHg at 25°C

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™, for more information see their website.

                    
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  5.82

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  88.54  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -0.51  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  61  (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  0.01617
       log Kow used: 5.82 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  0.002215 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.403E+003 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.0612
   Biowin2 (Non-Linear Model)     :   0.0021
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   1.9383  (months      )
   Biowin4 (Primary Survey Model) :   2.9797  (weeks       )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.0759
   Biowin6 (MITI Non-Linear Model):   0.0126
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model): -0.4849
 Ready Biodegradability Prediction:   NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
    Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  7.81E+003 Pa (58.6 mm Hg)
  Log Koa (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  3.84E-010 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.39E-008 
       Mackay model           :  3.07E-008 
       Octanol/air (Koa) model:  not available

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.5984 E-12 cm3/molecule-sec
      Half-Life =    17.874 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.23E-008 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  1.224E+004
      Log Koc:  4.088 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
    Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 3.778 (BCF = 5993)
       log Kow used: 5.82 (estimated)

 Volatilization from Water:
    Henry LC:  1.4E+003 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River:      1.715  hours
    Half-Life from Model Lake :      159.7  hours   (6.653 days)

 Removal In Wastewater Treatment (recommended maximum 95%):
    Total removal:             100.00  percent
    Total biodegradation:        0.17  percent
    Total sludge adsorption:    57.70  percent
    Total to Air:               42.13  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       5.26            429          1000       
   Water     5.89            1.44e+003    1000       
   Soil      0.0803          2.88e+003    1000       
   Sediment  88.8            1.3e+004     0          
     Persistence Time: 1.31e+003 hr

Patents	Personal Collections
Publication or Magazine Article	Web-based Article (blog or commentary)
Available Chemicals Databases	Biological Properties
Chemical Reactions	Chemical Safety Data
Drugs or Compounds in Development	Imaging Agents
Information Aggregators	Journal Publishers via MeSH
Ligand/binding/crystal Structure Databases	Metabolic Pathways
Molecular Libraries Screening Center Network	Natural Products
NIH Substance Repository	Physical Properties (including SAR/QSAR databases)
Protein 3D Structures	Spectroscopy Databases
Substance Vendors	Theoretical Properties
Toxicology/Environmental Databases	Virtual Library

Category	Target	PDB Code	LASSO Score
Nuclear Hormone Receptors	GR, glucocorticoid receptor	1m2z	0.09
Metalloenzymes	ACE, angiotensin-converting enzyme	1o86	0.03
Nuclear Hormone Receptors	PPARg, peroxisome proliferator activated receptor	1fm9	0.03
Kinases	TK, thymidine kinase	1kim	0.02
Other Enzymes	HIVPR, HIV protease	1hpx	0.01
Kinases	SRC, tyrosine kinase SRC	2src	0.01
Other Enzymes	HMGR, hydroxymethylglutaryl-CoA reductase	1hw8	0.01
Kinases	HSP90, human heat shock protein 90	1uy6	0.01
Metalloenzymes	PDE5, phosphodiesterase 5	1xp0	0.01
Nuclear Hormone Receptors	AR, androgen receptor	1xq2	0.01
Nuclear Hormone Receptors	MR, mineralocorticoid receptor	2aa2	0.01
Serine Proteases	Thrombin	1ba8	0.01
Other Enzymes	COX-1, cyclooxygenase-1	1p4g	0.01
Metalloenzymes	ADA, adenosine deaminase	1stw	0.01
Other Enzymes	PARP, poly(ADP-ribose) polymerase	1efy	0.01
Other Enzymes	PNP, purine nucleoside phosphorylase	1b8o	0.00
Other Enzymes	AmpC, AmpC beta-lactamase	1xgj	0.00
Nuclear Hormone Receptors	RXRa, retinoic X receptor R	1mvc	0.00
Other Enzymes	ALR2, aldose reductase	1ah3	0.00
Nuclear Hormone Receptors	ER, estrogen receptor; agonist	1l2i	0.00
Folate Enzymes	DHFR, dihydrofolate reductase	3dfr	0.00
Other Enzymes	HIVRT, HIV reverse transcriptase	1rt1	0.00
Kinases	VEGFr2, vascular endothelial growth factor receptor	1vr2	0.00
Other Enzymes	GPB, glycogen phosphorylase	1a8i	0.00
Serine Proteases	Trypsin	1bju	0.00
Other Enzymes	NA, neuraminidase	1a4g	0.00
Other Enzymes	SAHH, S-adenosyl-homocysteine hydrolase	1a7a	0.00
Kinases	FGFr1, fibroblast growth factor receptor kinase	1agw	0.00
Other Enzymes	COX-2, cyclooxygenase-2	1cx2	0.00
Kinases	CDK2, cyclindependent kinase 2	1ckp	0.00
Kinases	P38 MAP, P38 mitogen activated protein	1kv2	0.00
Other Enzymes	AChE, acetylcholinesterase	1eve	0.00
Folate Enzymes	GART, glycinamide ribonucleotide transformylase	1c2t	0.00
Nuclear Hormone Receptors	ER, estrogen receptor; antagonist	3ert	0.00
Kinases	PDGFrb, platelet derived growth factor receptor kinase	N/A	0.00
Metalloenzymes	COMT, catechol O-methyltransferase	1h1d	0.00
Kinases	EGFr, epidermal growth factor receptor	1m17	0.00
Serine Proteases	FXa, factor Xa	1f0r	0.00
Other Enzymes	InhA, enoyl ACP reductase	1p44	0.00

Want to comment
on this record?

Cyclotetrasiloxane, 2,2,4,4,6,6,8-heptamethyl-

SMILES:

Std. InChI:

Std. InChIKey:

Names and Identifiers

ChemSpider Searches

Search ChemSpider for:

Search external sites for this structure:

Properties

Spectra

CIFs

Articles

Chemical Vendors

Data Sources

Patents

RSC Databases

Pharmacological Links

SimBioSys LASSO

Want to commenton this record?

Cyclotetrasiloxane, 2,2,4,4,6,6,8-heptamethyl-

SMILES:

Std. InChI:

Std. InChIKey:

Search ChemSpider for:

Search external sites for this structure:

Want to comment
on this record?