Vitamin C

  • FOB Price:US $8-10 / Ton(s)
  • Min.Order:1 Ton(s)
  • Payment Terms:L/C , T/T
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Tianjin Haitong Chemical Industrial Co., LTD

Business Type:Trader

Country/Region:China

Ddu Verified

HOT Rank

6/10

Product Information

Description



Appearance: White or almost white microencapsulation

Odor: Odorless or almost odorless

Identification: Positive Reaction

Heavy Metals (lead) <10ppm

Arsenic <3ppm

Loss on drying (1g, silica gel, 24h) 2% max

Assay (Calculated on the dried basis) 93.0% min

Package: 25kg carton line with PE bags

Net weight: 25kg

Gross weight: 26.4kg

Storage: Kept in cool, dry and closed place

Shelf-life: 2 years


ITEMSTANDARD
AppearanceWhite or  almost  white crystal  or  crystalline powder
Identification  Positive
Melting point 191 °C  ~  192°C 
pH (5%,  w/v)  2.2 ~   2.5 
pH (2%,w/v)  2.4 ~   2.8 
Specific optical  rotation +20.5°  ~  +21.5°  
Clarity  of  solutionClear 
Heavy metals≤0.0003% 
Assay (as C 6H 8O6, %) 99.0  ~  100.5 
Copper≤3 mg/kg
Iron≤2 mg/kg
Mercury≤1 mg/kg 
Arsenic≤2 mg/kg 
Lead≤2 mg/kg
Oxalic acid≤0.2%
Loss   on drying≤0.1%
Sulphated ash≤ 0.1%
Residual solvents (as methanol)≤ 500  mg/kg 
Total  plate count (cfu/g)≤ 1000
Yeasts  & molds (cfu/g)≤ 100  
Escherichia.  Coli/g Absence 
Salmonella/  25g Absence 
Staphylococcus aureus/ 25g Absence 


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