xylitol

Structural formula

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

Numbering system

CAS number:87-99-0

MDL number:MFCD00064292

EINECS number:201-788-0

RTECS number:ZF0800000

BRN number:1720523

PubChem number:24902140

Physical property data

1. Properties: white crystal or crystalline powder, sweet, and the sweetness is equivalent to sucrose.

2. Density (g/mL, 25/4℃): 1.52

3. Relative vapor density (g/mL, air=1): Undetermined

4. Melting point (ºC): 92~96

5. Boiling point (ºC, normal pressure): 216

6. Boiling point (ºC, 5.2kPa): Undetermined

7. Refractive index: Undetermined

8. Flash point (ºC): Undetermined

9. Specific rotation (º): Undetermined

10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa, 25ºC): Undetermined

12. Saturated vapor Pressure (kPa, 60ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) partition coefficient: Undetermined

17. Explosion upper limit (%, V/V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Very soluble in water (about 160g/100ml ), slightly soluble in ethanol and methanol.

Toxicological data

1. Toxicity: LD50 (mouse, oral) 22g/kg (bw). DAI does not need to be regulated (FAO/WHO, 1994).

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 32.76

2. Molar volume (cm³/mol): 99.7

3. Isotonic specific volume (90.2K ): 306.8

4. Surface tension (dyne/cm): 1.570

5. Polarizability (10-24cm3): 12.98

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): -2.5

2. Number of hydrogen bond donors: 5

3. Number of hydrogen bond acceptors: 5

p>

4. Number of rotatable chemical bonds: 4

5. Number of tautomers:

6. Topological molecular polar surface area (TPSA): 101

p>

7. Number of heavy atoms: 10

8. Surface charge: 0

9. Complexity: 76.1

10. Number of isotope atoms : 0

11. Determine the number of atomic stereocenters: 2

12. Uncertain number of atomic stereocenters: 0

13. Determine the chemical bond positionsNumber of stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

This product is an edible nutritional sweetener. It must be controlled to be pollution-free during production, storage and transportation, and the product must be strictly inspected.

Storage method

Solid products are packed in double-layer kraft paper bags lined with PE film or polyethylene Packed in a propylene woven bag lined with PE film, net weight 25kg/bag. Liquid products are packed in plastic barrels. Store in a cool, ventilated and dry place.

Synthesis method

1. Polypentanolide contained in agricultural product processing waste (such as corn cobs, cottonseed husks, sugarcane bagasse, rice husks, etc.) Sugar is acidically hydrolyzed into xylose, and after refining, it is hydrogenated in the presence of catalyst sodium amalgam to obtain crude xylitol, which is then concentrated, crystallized, and separated to obtain crystalline xylitol.

2.The polypentosose contained in agricultural products processing leftovers (such as corn cobs, cottonseed husks, sugarcane bagasse, rice husks, etc.) is acidically hydrolyzed into xylose. After refining, it is added in the presence of the catalyst sodium amalgam. Hydrogen is used to produce crude xylitol, which is then concentrated, crystallized, and separated to obtain crystalline xylitol.

Purpose

1. Organic synthetic raw materials can be used to produce surfactants, emulsifiers, demulsifiers, various alkyd resins, coatings, varnishes, etc. The esters produced with synthetic fatty acids are non-volatile plasticizers. Xylitol can replace glycerol and is used in papermaking, daily necessities and defense industries. Because it is a polyhydroxy compound, it has a sweet taste, is non-toxic, and is suitable for low-calorie foods and as a sweetener for diabetics. Xylitol can inhibit the formation of dental caries and promote the healing of dental caries. It can be made into oral products and gums.

2.It is a special sweetener with nutritional value. It dissolves in water and absorbs heat. It has a refreshing taste when eaten. It does not cause dental caries and is also suitable for diabetics. Our country stipulates that it can be used in pastries, beverages, and candies to replace sucrose and be used in appropriate amounts according to production needs.