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Boric Acid Solution Structure

Boric Acid Solution

Chemical Properties

Melting point 160 °C (dec.) (lit.)
Boiling point 219-220 °C (9.7513 mmHg)
Density  1.440 g/cm3
vapor pressure  2.6 mm Hg ( 20 °C)
storage temp.  Store at +5°C to +30°C.
solubility  H2O: soluble
form  working solution
pka 8.91±0.43(Predicted)
Specific Gravity 1.435
color  ≤10(APHA)
Odor Odorless
PH Range 3.8 - 4.8
PH 3.6-4.4 (25℃, saturated solution in H2O)
Water Solubility  49.5 g/L (20 ºC)
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05
Merck  14,1336
BRN  1697939
Exposure limits ACGIH: TWA 2 mg/m3; STEL 6 mg/m3
InChIKey KGBXLFKZBHKPEV-UHFFFAOYSA-N
LogP -1.09 at 22℃
Substances Added to Food (formerly EAFUS) BORIC ACID
CAS DataBase Reference 10043-35-3(CAS DataBase Reference)
FDA UNII R57ZHV85D4
NIST Chemistry Reference B(OH)3(10043-35-3)
EPA Substance Registry System Orthoboric acid (10043-35-3)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H360FD
Precautionary statements P201-P202-P280-P308+P313-P405-P501
Hazard Codes  Xi,T,Xn
Risk Statements  36/37/38-60-63-62-61
Safety Statements  26-36-53-45-37/39-36/37/39-22-24/25-23
WGK Germany  2
RTECS  ED4550000
3
TSCA  Yes
HS Code  28100090
Hazardous Substances Data 10043-35-3(Hazardous Substances Data)
Toxicity LD50 orally in rats: 5.14 g/kg (Smyth).
NFPA 704:
0
2 1

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