InChI=1/C10H12O3/c1-2-7-13-10(12)8-3-5-9(11)6-4-8/h3-6,11H,2,7H2,1H3

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Search term: QELSKZZBTMNZEB-UHFFFAOYAD
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Inherent Properties, Identifiers and References

ChemSpider ID:	6907
Empirical Formula:	C₁₀H₁₂O₃
Molecular Weight:	180.2005
Nominal Mass:	180 Da
Average Mass:	180.2005 Da
Monoisotopic Mass:	180.078644 Da

Systematic Name:

propyl 4-hydroxybenzoate

SMILES:

O=C(OCCC)c1ccc(O)cc1

InChI:

InChI=1/C10H12O3/c1-2-7-13-10(12)8-3-5-9(11)6-4-8/h3-6,11H,2,7H2,1H3

InChIKey:

QELSKZZBTMNZEB-UHFFFAOYAD

Std. InChI:

InChI=1S/C10H12O3/c1-2-7-13-10(12)8-3-5-9(11)6-4-8/h3-6,11H,2,7H2,1H3

Std. InChIKey:

QELSKZZBTMNZEB-UHFFFAOYSA-N

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Wikipedia Article(s)

Parabens are a class of chemicals widely used as preservatives in the cosmetic and pharmaceutical industries. Parabens are effective preservatives in many types of formulas. These compounds, and their salts, are used primarily for their bactericidal and fungicidal properties. They can be found in shampoos, commercial moisturizers, shaving gels, personal lubricants, topical/parenteral pharmaceuticals, spray tanning solution and toothpaste. They are also used as food additives. Their efficacy as preservatives, in combination with their low cost, their long history of safe use and the unproven efficacy of natural alternatives like grapefruit seed extract (GSE), Read more... or Edit at Wikipedia...

Propylparaben, the propyl ester of p-hydroxybenzoic acid, occurs as a natural substance found in many plants and some insects, although it is manufactured synthetically for use in cosmetics, pharmaceuticals and foods. It is a preservative typically found in many water-based cosmetics, such as creams, lotions, shampoos and bath products. Read more... or Edit at Wikipedia...

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Supplemental Information

User Data

experimental physchem properties

Melting Point: 95-98

The melting point of a crystalline solid is the temperature range at which it changes state from solid to liquid. See also: Melting Point

Flash Point: 180(356F)

The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in air. See also: Flash Point

miscellaneous

Safety: CAUTION: May irritate eyes, skin, and respiratory tract

See Chemical Safety

Names and Synonyms

Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Redirected by Users, Redirect Approved by Experts

Propyl paraben

4-10-00-00374 (Beilstein Handbook Reference) [Beilstein]

4-Hydroxybenzoate de propyle

benzoic acid, 4-hydroxy-, propyl ester

Mekkings P

n-Propylparaben

p-Oxybenzoesaurepropylester [German]

Propyl 4-hydroxybenzoate

Propyl parahydroxybenzoate (JP15)

Propyl parahydroxybenzoate (TN)

More...

Database ID(s)

Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Redirected by Users, Redirect Approved by Experts

ACD/Labs Predicted Properties

ACD/LogP:	2.93	# of Rule of 5 Violations:	0
ACD/LogD (pH 5.5):	2.93	ACD/LogD (pH 7.4):	2.87
ACD/BCF (pH 5.5):	98.6	ACD/BCF (pH 7.4):	85.99
ACD/KOC (pH 5.5):	930.23	ACD/KOC (pH 7.4):	811.29
#H bond acceptors:	3	#H bond donors:	1
#Freely Rotating Bonds:	5	Polar Surface Area:	46.53 Å²
Index of Refraction:	1.531	Molar Refractivity:	49.17 cm³
Molar Volume:	158.7 cm³	Polarizability:	19.49 10^-24cm³
Surface Tension:	43 dyne/cm	Density:	1.134 g/cm³
Flash Point:	124.6 °C	Enthalpy of Vaporization:	55.53 kJ/mol
Boiling Point:	294.3 °C at 760 mmHg	Vapour Pressure:	0.00093 mmHg at 25°C

MeSH

EPI Summary

            
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  2.98
    Log Kow (Exper. database match) =  3.04
       Exper. Ref:  Hansch,C et al. (1995)

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  285.14  (Adapted Stein & Brown method)
    Melting Pt (deg C):  71.81  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  0.000307  (Modified Grain method)
    MP  (exp database):  97 deg C
    Subcooled liquid VP: 0.00153 mm Hg (25 deg C, Mod-Grain method)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  529.3
       log Kow used: 3.04 (expkow database)
       no-melting pt equation used
     Water Sol (Exper. database match) =  500 mg/L (25 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  424.53 mg/L
    Wat Sol (Exper. database match) =  500.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 ECOSAR Class Program (ECOSAR v0.99h):
    Class(es) found:
       Esters
       Phenols

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   6.37E-009  atm-m3/mole
   Group Method:   4.25E-009  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  1.375E-007 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  3.04  (exp database)
  Log Kaw used:  -6.584  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  9.624
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.9517
   Biowin2 (Non-Linear Model)     :   0.9957
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9975  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8564  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.7161
   Biowin6 (MITI Non-Linear Model):   0.8344
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6793
 Ready Biodegradability Prediction:   YES

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

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
  Vapor pressure (liquid/subcooled):  0.204 Pa (0.00153 mm Hg)
  Log Koa (Koawin est  ): 9.624
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  1.47E-005 
       Octanol/air (Koa) model:  0.00103 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.000531 
       Mackay model           :  0.00118 
       Octanol/air (Koa) model:  0.0763 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =  14.0678 E-12 cm3/molecule-sec
      Half-Life =     0.760 Days (12-hr day; 1.5E6 OH/cm3)
      Half-Life =     9.124 Hrs
   Ozone Reaction:
      No Ozone Reaction Estimation
   Reaction With Nitrate Radicals May Be Important!
   Fraction sorbed to airborne particulates (phi): 0.000853 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  427.2
      Log Koc:  2.631 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  5.102E-003  L/mol-sec
  Kb Half-Life at pH 8:       4.305  years  
  Kb Half-Life at pH 7:      43.052  years  

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 1.641 (BCF = 43.73)
       log Kow used: 3.04 (expkow database)

 Volatilization from Water:
    Henry LC:  4.25E-009 atm-m3/mole  (estimated by Group SAR Method)
    Half-Life from Model River: 1.849E+005  hours   (7706 days)
    Half-Life from Model Lake : 2.018E+006  hours   (8.407E+004 days)

 Removal In Wastewater Treatment:
    Total removal:               6.04  percent
    Total biodegradation:        0.13  percent
    Total sludge adsorption:     5.92  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       0.0708          18.2         1000       
   Water     17.2            360          1000       
   Soil      82.4            720          1000       
   Sediment  0.31            3.24e+003    0          
     Persistence Time: 751 hr

SimBioSys LASSO

Descriptors: 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 2, 5, 4, 2, 0, 6, 2, 1, 0, 0, 0, 0, 0

Category	Target	PDB Code	LASSO Score
Other Enzymes	AChE, acetylcholinesterase	1eve	0.04
Nuclear Hormone Receptors	PPARg, peroxisome proliferator activated receptor	1fm9	0.03
Kinases	SRC, tyrosine kinase SRC	2src	0.01
Other Enzymes	HMGR, hydroxymethylglutaryl-CoA reductase	1hw8	0.01
Other Enzymes	HIVPR, HIV protease	1hpx	0.01
Nuclear Hormone Receptors	MR, mineralocorticoid receptor	2aa2	0.01
Serine Proteases	FXa, factor Xa	1f0r	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	PR, progesterone receptor	1sr7	0.00
Nuclear Hormone Receptors	ER, estrogen receptor; agonist	1l2i	0.00
Metalloenzymes	ACE, angiotensin-converting enzyme	1o86	0.00
Folate Enzymes	DHFR, dihydrofolate reductase	3dfr	0.00
Kinases	VEGFr2, vascular endothelial growth factor receptor	1vr2	0.00
Other Enzymes	GPB, glycogen phosphorylase	1a8i	0.00
Other Enzymes	COX-1, cyclooxygenase-1	1p4g	0.00
Kinases	FGFr1, fibroblast growth factor receptor kinase	1agw	0.00
Other Enzymes	SAHH, S-adenosyl-homocysteine hydrolase	1a7a	0.00
Serine Proteases	Thrombin	1ba8	0.00
Metalloenzymes	COMT, catechol O-methyltransferase	1h1d	0.00
Kinases	TK, thymidine kinase	1kim	0.00
Other Enzymes	NA, neuraminidase	1a4g	0.00
Metalloenzymes	ADA, adenosine deaminase	1stw	0.00
Nuclear Hormone Receptors	AR, androgen receptor	1xq2	0.00
Kinases	P38 MAP, P38 mitogen activated protein	1kv2	0.00
Nuclear Hormone Receptors	RXRa, retinoic X receptor R	1mvc	0.00
Folate Enzymes	GART, glycinamide ribonucleotide transformylase	1c2t	0.00
Kinases	PDGFrb, platelet derived growth factor receptor kinase	N/A	0.00
Kinases	HSP90, human heat shock protein 90	1uy6	0.00
Other Enzymes	HIVRT, HIV reverse transcriptase	1rt1	0.00
Kinases	EGFr, epidermal growth factor receptor	1m17	0.00
Kinases	CDK2, cyclindependent kinase 2	1ckp	0.00
Other Enzymes	COX-2, cyclooxygenase-2	1cx2	0.00