TitleProduct

Ascorbic Acid (Coated 93%)

  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Tianjin

  • Validity to:

    Long-term effective

  • Last update:

    2017-12-23 03:17

  • Browse the number:

    178

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Company Profile

Tianjin Haitong Chemical Industrial Co., Ltd.

By certification [File Integrity]

Contact:Miss Daisy Cheng(Mr.)  

Email:

Telephone:

Phone:

Area:Tianjin

Address:Tianjin

Website: http://haitongchem668.taishan-led.com/

Product Details


Appearance: White or almost white granular pass

Odor: Odorless or almost odorless

Identification: Positive Reaction

Heavy Metals (lead) <10ppm

Arsenic <3ppm

Loss on drying((1g, silica gel, 24h) 0.15% max

Residue on ignition 0.1% max

Assay (Calculated on the dried basis) 92.0- 94.0%

Fineness: Through 20 Mesh &ge 98% b. Through 100 Mesh 25%

Microbiology Max. 500aerobe/g Max. 100 fungus/g

Absence of E. Coli

Storage: Kept in cool, dry and closed place

Shelf-life: 2 years
 
ITEM STANDARD
Appearance White 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 solution Clear 
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