L(+)-Ascorbic acid | 50-81-7

Short Description:

Product Name:L(+)-Ascorbic acid

CAS No.:50-81-7

Appearance:White crystal powder

Molecular Weight:176.12

MF:C6H8O6

Melting Point:190-194 °C (dec.)

Density: 1,65 g/cm3

EINECS No.:200-066-2

Place of Origin:China (Mainland)

Type:nutrient supplements,Pharmaceutical Intermedaites


Product Detail

FAQ

Product Tags

1. Introduction

l-ascorbic acid is white crystal or crystalline powder. Odorless. Sour. Flash point 99. Melting point 187 ~ 192. Browned gradually by light. Dry conditions remained stable in the air, but in solution rapidly degenerate when in the presence of air. Ascorbic acid is stable when PH value of 3.4 ~ 4.5. About 1g of this product soluble in 5ml water and 30ml ethanol.
Ascorbic acid powder insoluble in chloroform, ethyl ether, non-volatile oil and benzene. Strongly reduced and polyphenol oxidase inhibitory effect, Ascorbic acid added to beer, fruit juice, etc. can be used as antioxidants in food.

2. Packing

(1) Packaging: 25kg carton drum (32cm*58cm) or 1kg foil bag (10cm*15cm) or by request of clients.
(2) Shelf Life: 2 years when properly stored.
(3) Storage: Preserve in tightly sealed, light and oxygen resistant containers.
(4) Delivery: Prompt delivery after payment confirmed by air courier or by sea.

3. USAGE

(1) l-ascorbic acid is used as nutritional element in feed additives.
(2) l-ascorbic acid can enhance resistance to infectious diseases.
(3) l-ascorbic acid Palmitat can prevent formation of nitrous amine from nitrous acid in meat products.
(4) It has the function of improving dough quality and making baked food expand to its maximum.
(5) Compensate the Vitamin C losses of beverage ,fruits and vegetables during processing rocedures.

4. TECHNICAL PARAMETERS

INSPECTION ITEM

STANDARD

RESULTS

Appearance

White crystalline powder

White crystalline powder

Identification

Positive

Positive

Clarity of solution

Clear

Clear

Color of solution

£≤BY7

<BY7

Assay

99.0~100.5%

99.6%

Loss on Drying

≤0.4%

0.04%

*Residue on ignition

£0.1%

0.04%

Specific rotation

+20.5°~ +21.5°

+20.95°

PH(with 2% water solution)

2.4-2.8

2.64

PH(with 5% water solution)

2.1-2.6

2.32

Melting range

About 190℃

191℃

Heavy metals

≤3ppm

<3ppm

*Iron

≤2ppm

<2pp

*Copper

≤2ppm

<2ppm

*Impurity E

≤0.2%

<0.2%

*Arsenic

≤1ppm

<1ppm

*Lead

≤2ppm

<2ppm

*Cadmium

≤1ppm

<1ppm

*Mercury

≤1ppm

<1ppm

*Organic volatile impurities (As Methanol)

≤3000ppm

<3000ppm

*Total Plate Count

≤1,000cfu/g

<1,000cfu/g

*Yeast & Moulds

≤500cfu/g

<500cfu/g

*Coliforms

Absent in 1g

Absent in 1g

*E. Coli

Absent in 1g

Absent in 1g

*Salmonella

Absent in 25g

Absent in 25g

*Staph Aureus

Absent in 25g

Absent in 25g

According to BP2016, E300, USP39, FCC 10, EP 8.


  • Previous:
  • Next:

  • Q1: I’m interested in your products, but now I’m out of China, could you offer your labels to my country?
    A1: Sure. We ‘ve got full exportation experience, and no matter where you are, we may arrange the delivery for you, either by sea, by air or by express , depending on your need.

    Q2 : How can I get the samples ?
    A2 We can provide you a free sample for our existing products, the lead time is around 1-2 days. You need to pay the sample delivery cost, If you need the samples according to your design, the sample cost has to be charged from you. The lead time is around 5 days.

    Q3: Is it possible to custom the labels with my own design?
    A3: Yes, and you just need to send us your drawings or artworks, then you can get you want.

    Q4: How can I release the payment to you?
    A4: We can receive your payment by T/T, ESCROW or Western union which is recommended and we can also receive by L/C, D/P, D/A. OA

    Q5: How do you check all the goods in the production line?
    A5: We have spot inspection and finished product inspection. We check the goods when they go into the next step production procedure

  • INQUIRY DETAILS *

    INQUIRY NOW
    • captcha

    Related Products

    WhatsApp Online Chat !