Boiling point :429.2°C (rough estimate)
Density :1.7929 (rough estimate)
refractive index :1.6000 (estimate)
storage temp. :Inert atmosphere,Room Temperature
pka :-0.51±0.40(Predicted)
InChI :InChI=1S/C10H8O8S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,11-12H,(H,13,14,15)(H,16,17,18)
InChIKey :HLVXFWDLRHCZEI-UHFFFAOYSA-N
SMILES :C1=C2C(C(O)=CC(S(O)(=O)=O)=C2)=C(O)C=C1S(O)(=O)=O
CAS DataBase Reference :148-25-4(CAS DataBase Reference)
EPA Substance Registry System :2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy- (148-25-4)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P321 Specific treatment (see … on this label). P332+P313 IF SKIN irritation occurs: Get medical advice/attention. P362 Take off contaminated clothing and wash before reuse.