Appearance: White, light brown crystals

• Molecular Formula: C₁₁H₁₂N₂O₂
• Molecular Weight: 204.23
• Structure of Tryptophan:

As the balance of amino acids improves with the inclusion of L-Lysine, DL-Methionine and L-Threonine and the subsequent reduction in the amount of excess amino acids, Tryptophan generally becomes the next limiting amino acid. Although Tryptophan constitutes a relatively small portion of the feed, corn is low in Tryptophan and corn-soy diets become limiting in Tryptophan.

Using modern selection techniques, bacteria have been developed which produce L- Tryptophan during fermentation. By selecting higher yielding organisms and improving production methods, L-Tryptophan is now commercially available for use in animal feeds.

In addition the need for maintenance and lean body tissue accretion, Tryptophan is also involved in other metabolic systems. Firstly, with serotonin (a neuro-mediator in the brain) which is derived from Tryptophan, and because of this relationship Tryptophan has been fed at higher levels to calm animals in stress conditions. Secondly, the vitamin niacin can also be synthesized from Tryptophan, although not at a sufficient rate to meet the niacin requirements of the animal.

CHEMICAL SPECIFICATIONS

Chemical Formula: C₁₁H₁₂N₂O₂

Molecular Weight: 204.23

Percent Nitrogen: 13.45%

Description: Yellowish-white crystalline powder

Solubility in H₂O: 1.136 g/ 100g water at 20ºC

Loss on Drying: 1.0% (Max)

Purity: 98.0% (Min)

Residue on ignition: 0.5% (Max)

Bulk Density kg/L: 0.20 – 0.30

NUTRITIONAL SPECIFICATIONS

L-Tryptophan content: 98.0%

Crude Protein (%/16 g-N): 84.0%

PACKAGING SPECIFICATIONS

Tryptophan 10 kg bags:

Pallet size – 38″ x 47″

Ti and hi – width 47-49″ x Depth 35-37″ x Height 40-46″ (on the pallet)

Stack pattern 5 bags/layer 10 high

_{1. J. Noblet, INRA, France (Personal communications, 2000)}

_{2. Larbier, INRA, France}

The information contained herein is correct to the best of our knowledge. The recommendations or

suggestions made in this document are made without guarantee or representation as to result.

For animal feed only – not for human consumption

Manufacturer:

Ajinomoto Eurolysine

Paris, France

Distributed by:

Ajinomoto Heartland, Inc.

1116 Hwy 137

Eddyville, Iowa 52553

Emergency Phone:

+1 (641) 969-4551 – Eddyville

+1 (773) 380-7000 – Chicago

DESCRIPTION

Product Name: L-Tryptophan (Feed Grade)

Chemical Name: 2 –Amino –3 indolepropionic acid

CAS Registry Number: 73-22-3

Synonyms: Tryptophan

Chemical Family: Amino acid

Composition: (As L-Tryptophan more than 98.0%)

Formula:C₁₁H₁₂N₂O₂

STATEMENT OF HEALTH HAZARD

Hazard Description: Avoid contact with eyes; mild eye irritant. Otherwise non-hazardous.

EMERGENCY TREATMENT

Emergency Aid: Flush eyes with water for 15 minutes. Ensure thorough rinsing.

PHYSICAL DATA

Bulk Density: 0.35 – 0.45 kg/L

Appearance & Odor: White powder; odorless; slightly characteristic taste.

Solubility in Water: 1.06 g/100 g water at 20°C

Percent Volatile: 0%

Evaporation Rate: None

SPILL OR LEAD PROCEDURES

Steps to be Taken: Ordinary, same as food

Waste Disposal: Dissolve or suspend in H₂O

FIRE & EXPLOSION HAZARD DATA

Flash Point: None

Autoignition Temperature: N/A

Flammable Limits in Air: Non Flammable

Extinguishing Media: Water

Special Fire-Fighting Procedures: Should wear protective clothing and respiratory protection to protect from fumes of NOx.

Unusual Fire & Explosion Hazards: Not a fire hazard

CHEMICAL REACTIVITY

Stability: Highly stable

Conditions to Avoid: None

Hazardous Decomposition Products: When heated to decomposition, fumes of NOx will be emitted.

SPECIAL PROTECTION & PROCEDURES

Respiratory Protection: Unnecessary

Ventilation: Ordinary

Protective Equipment: None needed

SPECIAL PRECAUTIONS

Handling & Storage: None needed

Work Place: Protective Equipment: None Required.

LABELING & SHIPPING

Proper Shipping Name: L-Tryptophan

OTHER REGULATORY REQUIREMENTS

None

For animal feed only – not for human consumption.