Boric acid
- Formula: BH3O3
- Molecular weight: 61.833
- IUPAC Standard InChI: InChI=1S/BH3O3/c2-1(3)4/h2-4H
- IUPAC Standard InChIKey: KGBXLFKZBHKPEV-UHFFFAOYSA-N
- CAS Registry Number: 10043-35-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Orthoboric acid; H3-BO3; Boracic acid; Boric acid (BH3O3); Boric acid (H3BO3); Borofax; Boron hydroxide; Boron trihydroxide; NCI-C56417; Orthoboric acid (B(OH)3); Borsaure; Three elephant; Ant flip; Homberg's salt; B(OH)3; Basilit B; Dr.'s 1 Flea Terminator DF; Dr.'s 1 Flea Terminator DFPBO; Dr.'s 1 Flea Terminator DT; Dr.'s 1 Flea Terminator DTPBO; Flea Prufe; NSC 81726; Super Flea Eliminator; Trihydroxyborane; Acidum boricum (Salt/Mix); Bluboro (Salt/Mix); Collyrium Eye Wash (Salt/Mix); Collyrium Fresh-Eye Drops (Salt/Mix); component of Aci-Jel (Salt/Mix)
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Solid Phase Heat Capacity (Shomate Equation)
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. - 1500. |
|---|---|
| A | 9.757161 |
| B | 46.66099 |
| C | -20.70950 |
| D | 3.250980 |
| E | -0.219822 |
| F | -267.0179 |
| G | 18.75030 |
| H | -261.4699 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in December, 1964 |
| Temperature (K) |
Cp (cal/mol*K) |
S° (cal/mol*K) |
-(G° - H°298.15)/T (cal/mol*K) |
H° - H°298.15 (kcal/mol) |
|---|---|---|---|---|
| 298. | 19.43 | 21.19 | 21.21 | -0.01 |
| 300. | 19.54 | 21.32 | 21.21 | 0.03 |
| 400. | 23.94 | 27.57 | 22.03 | 2.22 |
| 500. | 27.44 | 33.30 | 23.72 | 4.79 |
| 600. | 30.39 | 38.57 | 25.76 | 7.69 |
| 700. | 32.94 | 43.46 | 27.95 | 10.86 |
| 800. | 35.15 | 48.00 | 30.17 | 14.26 |
| 900. | 37.08 | 52.26 | 32.39 | 17.88 |
| 1000. | 38.74 | 56.25 | 34.58 | 21.67 |
| 1100. | 40.17 | 60.01 | 36.72 | 25.62 |
| 1200. | 41.39 | 63.56 | 38.81 | 29.70 |
| 1300. | 42.43 | 66.92 | 40.85 | 33.89 |
| 1400. | 43.30 | 70.09 | 42.82 | 38.18 |
| 1500. | 44.03 | 73.11 | 44.74 | 42.54 |
References
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Notes
Go To: Top, Solid Phase Heat Capacity (Shomate Equation), References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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