Chemical Name: D-Galactal
IUPAC NAME: 2-(Hydroxymethyl)-3,4-dihydro-2H-pyran-3,4-diol
CAS No.: 21193-75-9
EINECS: 244-264-7
Molecular Formula: C₆H₁₀O₄
Formula Weight: 146.14 g/mol
Melting Point: 99-102 °C
Density: 1.414 g/cm³ 
Flash Point: 150.7 °C
Boiling Point: 325.5 °C at 760 mmHg
Storage temp.: 2-8°C
Following is the structure of D-Galactal (21193-75-9):

Product Categories about D-Galactal (21193-75-9) are 13C & 2H Sugars ; Biochemistry ; Galactose ; Glycals ; Sugars ; Carbohydrates & Derivatives
The chemical synonymous of D-Galactal (21193-75-9) are 2,6-Anhydro-5-deoxy-d-arabino-hex-5-enito ; 1,5-Anhydro-2-deoxy-d-lyxo-hex-1-enitol ; GALACTAL ; GALACTAL, D- ; D-GALACTAL ; D-Galactat ; 2-(Hydroxymethyl)-3,4-dihydro-2H-pyran-3,4-diol ; (2R,3R,4R)-2-(Hydroxymethyl)-3,4-dihydro-2H-pyran-3,4-diol

Hazard Codes:
Xi: Irritant
Risk Statements about D-Galactal (21193-75-9):
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements about D-Galactal (21193-75-9):
S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 Wear suitable protective clothing.
S24/25: Avoid contact with skin and eyes.
Attentions:
1. Storage: Store in a tightly closed container. Store in a dry area. Keep refrigerated. (Store below 4°C/39°F.) Store under nitrogen.
2. Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.