Table 1.
Definition and distributions (μg/m3) of propylene glycol and glycol ethers (PGEs), terpene hydrocarbons, Texanols, and phthalates.
| N | Mean | S.D. | Min | 25th | 50th | 75th | Max | |
|---|---|---|---|---|---|---|---|---|
| Percentiles | ||||||||
| Propylene glycol and glycol ethers (CAS #) | ||||||||
| 1,2-propanediol (propylene glycol) (CAS # 57-55-6) | 165 | 8.20 | 8.17 | 0.51 | 2.84 | 5.54 | 10.25 | 48.62 |
| 1-methoxy-2-propanol (α-isomer of Propylene Glycol Monomethyl Ether) (CAS # 107-98-2) | 86 | 4.51 | 3.08 | 0.73 | 2.32 | 3.51 | 6.00 | 15.68 |
| 2-(2-butoxyethoxy)ethanol (CAS # 112-34-5) | 69 | 4.73 | 4.90 | 0.46 | 1.95 | 2.87 | 6.04 | 30.33 |
| 1-butoxy-2-propanol (CAS # 5131-66-8) | 65 | 7.15 | 8.87 | 0.60 | 2.21 | 4.03 | 8.08 | 53.04 |
| 2-(2-butoxyethoxy)ethanol acetate (CAS # 124-17-4) | 33 | 3.30 | 3.05 | 0.53 | 1.62 | 2.32 | 3.57 | 13.26 |
| 2-butoxy ethanol (CAS # 111-76-2) | 27 | 4.74 | 5.67 | 0.78 | 1.73 | 2.36 | 4.84 | 24.39 |
| 2-(2-(2-butoxyethoxy)ethoxy) ethanol (CAS # 143-22-6) | 20 | 2.10 | 1.80 | 0.65 | 0.96 | 1.68 | 2.60 | 8.74 |
| 2-(2-ethoxyethoxy) ethanol (cas # 111-90-0) | 16 | 9.72 | 9.39 | 2.26 | 4.38 | 5.73 | 11.59 | 36.86 |
| 1-(2-methoxypropoxy)-2-propanol (CAS # 13429-07-7) | 11 | 6.63 | 5.74 | 1.39 | 2.73 | 3.99 | 13.91 | 16.15 |
| Dipropylene glycol methyl ether (CAS # 34590-94-8) | 7 | 4.43 | 2.52 | 1.83 | 2.55 | 3.74 | 6.35 | 9.16 |
| 2-(2-methoxyethoxy) ethanol (CAS # 111-77-3) | 6 | 6.28 | 4.47 | 3.18 | 3.71 | 4.46 | 8.72 | 15.08 |
| 2-(2-hydroxypropoxy)-1-propanol (CAS # 106-62-7) | 4 | 1.42 | 0.74 | 0.62 | 0.74 | 1.37 | 2.17 | 2.34 |
| 1-(2-methoxy-1-methylethoxy)-2-propanol (CAS # 20324-32-7) | 3 | 6.66 | 2.48 | 4.13 | 4.13 | 6.76 | 9.08 | 9.08 |
| 1-propoxy-2-propanol (CAS # 1569-01-3) | 2 | 5.23 | 5.20 | 1.55 | 1.55 | 5.23 | 8.91 | 8.91 |
| 2-(2-ethoxyethoxy) ethanol acetate (CAS # 112-15-2) | 2 | 8.29 | 2.90 | 6.24 | 6.24 | 8.29 | 10.34 | 10.34 |
| 2,2-oxybis ethanol (Diethylene glycol) (CAS # 111-46-6) | 1 | 7.97 | 7.97 | 7.97 | 7.97 | 7.97 | 7.97 | |
| Ethanediol (Ethylene glycol) (CAS # 107-21-1) | 1 | 1.92 | 1.92 | 1.92 | 1.92 | 1.92 | 1.92 | |
| Terpene hydrocarbons | ||||||||
| γ–Terpinene (CAS # 99-85-4) | 3 | 2.82 | 0.44 | 2.38 | 2.38 | 2.82 | 3.26 | 3.26 |
| iso–Terpinolene (CAS # 586-62-9) | 7 | 3.86 | 1.62 | 2.10 | 2.53 | 3.30 | 5.75 | 6.08 |
| α–Terpinene (CAS # 99-86-5) | 1 | 25.21 | 25.21 | 25.21 | 25.21 | 25.21 | 25.21 | |
| α–Pinene (CAS # 80-56-8) | 239 | 20.76 | 16.40 | 1.93 | 8.47 | 16.27 | 28.58 | 97.53 |
| Limonene (CAS # 5989-27-5) | 383 | 17.78 | 14.50 | 1.36 | 7.84 | 13.61 | 23.19 | 92.99 |
| β–Pinene (CAS # 127-91-3) | 35 | 4.41 | 2.58 | 0.62 | 2.77 | 3.85 | 5.18 | 13.21 |
| Camphene (CAS # 79-92-5) | 155 | 5.62 | 4.24 | 0.71 | 2.82 | 4.59 | 7.07 | 27.16 |
| β–Phellandrene (CAS # 555-10-2) | 14 | 5.81 | 4.34 | 1.39 | 2.37 | 4.97 | 8.08 | 16.35 |
| Texanol® | ||||||||
| Texanol A | 39 | 9.95 | 6.56 | 1.20 | 5.63 | 7.58 | 14.33 | 27.89 |
| Texanol B | 88 | 5.60 | 7.13 | 0.47 | 1.72 | 2.76 | 6.55 | 42.48 |
| Phthalate compounds in dust samplea) | ||||||||
| n-butyl benzyl phthalate (BBzP) | 296 | 0.38 | 2.64 | 0.01 | 0.09 | 0.16 | 0.30 | 45.55 |
| di(2-ethylhexyl)phthalate (DEHP) | 351 | 1.31 | 2.59 | 0.02 | 0.46 | 0.77 | 1.31 | 40.46 |
a)
Sample size is reduced because only dust samples > 25 mg are considered [30].