Selenic acid

Modify Date: 2025-08-20 12:03:50

Selenic acid Structure
Selenic acid structure
Common Name Selenic acid
CAS Number 7783-08-6 Molecular Weight 144.973
Density 1.407 g/mL at 25 °C Boiling Point 260°C
Molecular Formula H2O4Se Melting Point 58°C
MSDS Chinese Flash Point >230 °F
Symbol GHS06 GHS08 GHS09
GHS06, GHS08, GHS09
Signal Word Danger

 Names

Name selenic acid
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.407 g/mL at 25 °C
Boiling Point 260°C
Melting Point 58°C
Molecular Formula H2O4Se
Molecular Weight 144.973
Flash Point >230 °F
Exact Mass 145.911835
PSA 74.60000
Index of Refraction n20/D 1.5174(lit.)
Stability Stable, but decomposes on heating. Non-flammable. Incompatible with metals, combustible materials. Hygroscopic.

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VS6575000
CHEMICAL NAME :
Selenic acid
CAS REGISTRY NUMBER :
7783-08-6
LAST UPDATED :
199712
DATA ITEMS CITED :
24
MOLECULAR FORMULA :
H2-O4-Se
MOLECULAR WEIGHT :
144.98
WISWESSER LINE NOTATION :
..H2.SE-O4

 Safety Information

Symbol GHS06 GHS08 GHS09
GHS06, GHS08, GHS09
Signal Word Danger
Hazard Statements H301-H331-H373-H410
Precautionary Statements P261-P273-P301 + P310-P311-P501
Hazard Codes T: Toxic;
Risk Phrases R23/24/25;R34
Safety Phrases S23-S26-S36/37/39-S45-S61-S60-S28-S20/21
RIDADR UN 3264 8/PG 1
RTECS VS6575000
Packaging Group I
Hazard Class 8

 Synthetic Route

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 Synonyms

selenite acid
MFCD00012191
selenic asid
selenate acid
H2SeO4
UN1905
EINECS 231-979-4
selenium acid
Selenic acid
dihydroxidodioxidoselenium
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